Control Chart | Zyeon UI

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status="ready" · 30 fill weights. B-13 spikes to 253.9 g (outside 3σ, rule 1); after the resin change B-14 opens a run of 10 batches below the centre line — rule 2 waits for the eighth of them (B-21) while rule 6 already fires at B-20; B-19…B-28 climb monotonically for 10 batches and rule 3 reports at B-24. The four signals are four shapes, not four colours; hover or walk the points with the arrow keys, and jump between signals with up/down.

Fill weight · line 3

Target 250 g · one measurement per batch, oldest first

Fill weight (g)CL 249.88 gUCL 252.14 g · LCL 247.62 g1σ 0.75 g30 batches4 signals

248250252254

CLUCLLCL

B-01B-05B-09B-13B-17B-21B-25B-30

Rules in force1. Beyond limits2. Run on one side3. Trend5. 2 of 3 beyond 2σ6. 4 of 5 beyond 1σ

sigma from the mean moving range of 30 batches. A signal is drawn where its pattern completes; hovering or focusing a point brackets the whole pattern it belongs to. Arrow keys walk the points, up and down jump between signals, Enter pins the readout and Escape clears it.

Fill weight · line 3: every batch in time order with its distance from the centre line. Centre line 249.88 g, control limits 247.62 g to 252.14 g; sigma from the mean moving range of 30 batches. Rules in force: 1 Beyond limits, 2 Run on one side, 3 Trend, 5 2 of 3 beyond 2σ, 6 4 of 5 beyond 1σ. Run length 8, trend length 6.
batch	Fill weight (g)	Sigma from centre	Zone	Signal	Note
B-01	249.77 g	−0.1	zone C, within 1 sigma	in control	—
B-02	250.51 g	+0.8	zone C, within 1 sigma	in control	—
B-03	250.06 g	+0.2	zone C, within 1 sigma	in control	—
B-04	250.55 g	+0.9	zone C, within 1 sigma	in control	—
B-05	249.93 g	+0.1	zone C, within 1 sigma	in control	—
B-06	248.79 g	−1.4	zone B, 1 to 2 sigma	in control	—
B-07	250.07 g	+0.3	zone C, within 1 sigma	in control	—
B-08	249.53 g	−0.5	zone C, within 1 sigma	in control	—
B-09	249.65 g	−0.3	zone C, within 1 sigma	in control	—
B-10	250.14 g	+0.3	zone C, within 1 sigma	in control	—
B-11	248.42 g	−1.9	zone B, 1 to 2 sigma	in control	—
B-12	249.71 g	−0.2	zone C, within 1 sigma	in control	—
B-13	253.9 g	+5.3	beyond the control limit	rule 1, beyond the upper control limit	hopper jam cleared by hand
B-14	248.4 g	−2.0	zone B, 1 to 2 sigma	part of 10 points in a row below the centre line	new resin lot
B-15	249.31 g	−0.8	zone C, within 1 sigma	part of 10 points in a row below the centre line	—
B-16	248.7 g	−1.6	zone B, 1 to 2 sigma	part of 4 of 5 points beyond 1σ below the centre line; part of 10 points in a row below the centre line	—
B-17	249.1 g	−1.0	zone B, 1 to 2 sigma	part of 4 of 5 points beyond 1σ below the centre line; part of 10 points in a row below the centre line	—
B-18	249.34 g	−0.7	zone C, within 1 sigma	part of 4 of 5 points beyond 1σ below the centre line; part of 10 points in a row below the centre line	—
B-19	248.99 g	−1.2	zone B, 1 to 2 sigma	part of 4 of 5 points beyond 1σ below the centre line; part of 10 points in a row below the centre line; part of 10 points in a row rising	—
B-20	249.03 g	−1.1	zone B, 1 to 2 sigma	rule 6, 4 of 5 points beyond 1σ below the centre line; part of 10 points in a row below the centre line; part of 10 points in a row rising	—
B-21	249.08 g	−1.1	zone B, 1 to 2 sigma	rule 2, 10 points in a row below the centre line; part of 4 of 5 points beyond 1σ below the centre line; part of 10 points in a row rising	—
B-22	249.4 g	−0.6	zone C, within 1 sigma	part of 10 points in a row below the centre line; part of 10 points in a row rising	—
B-23	249.7 g	−0.2	zone C, within 1 sigma	part of 10 points in a row below the centre line; part of 10 points in a row rising	—
B-24	250 g	+0.2	zone C, within 1 sigma	rule 3, 10 points in a row rising	—
B-25	250.35 g	+0.6	zone C, within 1 sigma	part of 10 points in a row rising	—
B-26	250.7 g	+1.1	zone B, 1 to 2 sigma	part of 10 points in a row rising	—
B-27	251.05 g	+1.6	zone B, 1 to 2 sigma	part of 10 points in a row rising	—
B-28	251.4 g	+2.0	zone A, 2 to 3 sigma	part of 10 points in a row rising	—
B-29	250.6 g	+1.0	zone C, within 1 sigma	in control	—
B-30	250.2 g	+0.4	zone C, within 1 sigma	in control	—

status="empty" · a valid contract with not a single measurement — kept distinct from "loading" and from a failed fetch.

Fill weight · line 3

Target 250 g · one measurement per batch, oldest first

Nothing measured yet

Points appear here as measurements are recorded; limits need at least two.

status="loading" · the skeleton keeps the shape of the centre line and both limits, is aria-hidden, and stops pulsing under reduced-motion.

Fill weight · line 3

Target 250 g · one measurement per batch, oldest first

status="error" · the fetch failed; "Try again" only appears when onRetry is passed, and clicking it switches to ready.

Fill weight · line 3

Target 250 g · one measurement per batch, oldest first

Couldn't load these measurements

The data source didn't respond.

A steady week on the same line: 24 batches, not one of the five rules fires, and the verdict line reads in control — a week where nothing happened still has to end in a stated conclusion rather than a blank.

Fill weight · line 5

Same rules, same limits — a process with nothing to report

Fill weight (g)CL 249.99 gUCL 251.05 g · LCL 248.94 g1σ 0.35 g24 batchesin control

249250251

CLUCLLCL

B-01B-04B-07B-10B-13B-16B-19B-22B-24

Rules in force1. Beyond limits2. Run on one side3. Trend5. 2 of 3 beyond 2σ6. 4 of 5 beyond 1σ

In control: nothing outside the limits and no non-random pattern in 24 batches.

sigma from the mean moving range of 24 batches. A signal is drawn where its pattern completes; hovering or focusing a point brackets the whole pattern it belongs to. Arrow keys walk the points, up and down jump between signals, Enter pins the readout and Escape clears it.

Fill weight · line 5: every batch in time order with its distance from the centre line. Centre line 249.99 g, control limits 248.94 g to 251.05 g; sigma from the mean moving range of 24 batches. Rules in force: 1 Beyond limits, 2 Run on one side, 3 Trend, 5 2 of 3 beyond 2σ, 6 4 of 5 beyond 1σ. Run length 8, trend length 6.
batch	Fill weight (g)	Sigma from centre	Zone	Signal	Note
B-01	249.79 g	−0.6	zone C, within 1 sigma	in control	—
B-02	249.98 g	−0.0	zone C, within 1 sigma	in control	—
B-03	249.77 g	−0.6	zone C, within 1 sigma	in control	—
B-04	249.67 g	−0.9	zone C, within 1 sigma	in control	—
B-05	250.08 g	+0.2	zone C, within 1 sigma	in control	—
B-06	250.08 g	+0.2	zone C, within 1 sigma	in control	—
B-07	250.41 g	+1.2	zone B, 1 to 2 sigma	in control	—
B-08	250.24 g	+0.7	zone C, within 1 sigma	in control	—
B-09	249.89 g	−0.3	zone C, within 1 sigma	in control	—
B-10	250.42 g	+1.2	zone B, 1 to 2 sigma	in control	—
B-11	250.66 g	+1.9	zone B, 1 to 2 sigma	in control	—
B-12	250.52 g	+1.5	zone B, 1 to 2 sigma	in control	—
B-13	249.56 g	−1.2	zone B, 1 to 2 sigma	in control	—
B-14	250.32 g	+0.9	zone C, within 1 sigma	in control	—
B-15	249.69 g	−0.9	zone C, within 1 sigma	in control	—
B-16	249.92 g	−0.2	zone C, within 1 sigma	in control	—
B-17	249.02 g	−2.8	zone A, 2 to 3 sigma	in control	—
B-18	249.6 g	−1.1	zone B, 1 to 2 sigma	in control	—
B-19	250.09 g	+0.3	zone C, within 1 sigma	in control	—
B-20	249.89 g	−0.3	zone C, within 1 sigma	in control	—
B-21	250.64 g	+1.8	zone B, 1 to 2 sigma	in control	—
B-22	250 g	+0.0	zone C, within 1 sigma	in control	—
B-23	249.76 g	−0.7	zone C, within 1 sigma	in control	—
B-24	249.83 g	−0.5	zone C, within 1 sigma	in control	—

Limits come from the 2025 capability study (centre 0.0 °C, sigma 0.8 °C) rather than being estimated from these 20 readings. The quantity itself can be negative; readings 13–15 walk out through zone A and past the lower limit, and three different rules fire in turn (reading 14 sits exactly on the limit — rule 1 tests a strict crossing, so touching does not count). The labels are far longer than the axis lane, so maxAxisLabels drops to 4 to give each one more width; the full text stays in the aria-label, the title and the sr-only table after truncation.

Reflow zone 3 · deviation from set point

Limits from the 2025 capability study: centre 0.0 °C, sigma 0.8 °C

Deviation from set point (°C)CL 0 °CUCL 2.4 °C · LCL -2.4 °C1σ 0.8 °C20 readings3 signals

-202

CLUCLLCL

Reflow oven 4 · zone 3 · reading 01Reflow oven 4 · zone 3 · reading 06Reflow oven 4 · zone 3 · reading 11Reflow oven 4 · zone 3 · reading 16Reflow oven 4 · zone 3 · reading 20

Rules in force1. Beyond limits2. Run on one side3. Trend5. 2 of 3 beyond 2σ6. 4 of 5 beyond 1σ

limits supplied, not estimated from this data. A signal is drawn where its pattern completes; hovering or focusing a point brackets the whole pattern it belongs to. Arrow keys walk the points, up and down jump between signals, Enter pins the readout and Escape clears it.

Reflow zone 3 · deviation from set point: every reading in time order with its distance from the centre line. Centre line 0 °C, control limits -2.4 °C to 2.4 °C; limits supplied, not estimated from this data. Rules in force: 1 Beyond limits, 2 Run on one side, 3 Trend, 5 2 of 3 beyond 2σ, 6 4 of 5 beyond 1σ. Run length 8, trend length 6.
reading	Deviation from set point (°C)	Sigma from centre	Zone	Signal	Note
Reflow oven 4 · zone 3 · reading 01	-0.4 °C	−0.5	zone C, within 1 sigma	in control	—
Reflow oven 4 · zone 3 · reading 02	-0.1 °C	−0.1	zone C, within 1 sigma	in control	—
Reflow oven 4 · zone 3 · reading 03	-0.21 °C	−0.3	zone C, within 1 sigma	in control	—
Reflow oven 4 · zone 3 · reading 04	-1.03 °C	−1.3	zone B, 1 to 2 sigma	in control	—
Reflow oven 4 · zone 3 · reading 05	-0.96 °C	−1.2	zone B, 1 to 2 sigma	in control	—
Reflow oven 4 · zone 3 · reading 06	-0.2 °C	−0.3	zone C, within 1 sigma	in control	—
Reflow oven 4 · zone 3 · reading 07	-0.28 °C	−0.4	zone C, within 1 sigma	in control	—
Reflow oven 4 · zone 3 · reading 08	0.23 °C	+0.3	zone C, within 1 sigma	in control	—
Reflow oven 4 · zone 3 · reading 09	-0.53 °C	−0.7	zone C, within 1 sigma	in control	—
Reflow oven 4 · zone 3 · reading 10	-0.62 °C	−0.8	zone C, within 1 sigma	in control	—
Reflow oven 4 · zone 3 · reading 11	-0.49 °C	−0.6	zone C, within 1 sigma	in control	—
Reflow oven 4 · zone 3 · reading 12	0.1 °C	+0.1	zone C, within 1 sigma	part of 2 of 3 points beyond 2σ below the centre line; part of 4 of 5 points beyond 1σ below the centre line	—
Reflow oven 4 · zone 3 · reading 13	-1.9 °C	−2.4	zone A, 2 to 3 sigma	part of 2 of 3 points beyond 2σ below the centre line; part of 4 of 5 points beyond 1σ below the centre line	—
Reflow oven 4 · zone 3 · reading 14	-2.4 °C	−3.0	zone A, 2 to 3 sigma	rule 5, 2 of 3 points beyond 2σ below the centre line; part of 4 of 5 points beyond 1σ below the centre line	—
Reflow oven 4 · zone 3 · reading 15	-2.95 °C	−3.7	beyond the control limit	rule 1, beyond the lower control limit; part of 2 of 3 points beyond 2σ below the centre line; part of 4 of 5 points beyond 1σ below the centre line	extraction fan tripped
Reflow oven 4 · zone 3 · reading 16	-1.6 °C	−2.0	zone B, 1 to 2 sigma	rule 6, 4 of 5 points beyond 1σ below the centre line; part of 2 of 3 points beyond 2σ below the centre line	—
Reflow oven 4 · zone 3 · reading 17	-0.8 °C	−1.0	zone C, within 1 sigma	part of 4 of 5 points beyond 1σ below the centre line	—
Reflow oven 4 · zone 3 · reading 18	0.4 °C	+0.5	zone C, within 1 sigma	in control	—
Reflow oven 4 · zone 3 · reading 19	1.1 °C	+1.4	zone B, 1 to 2 sigma	in control	—
Reflow oven 4 · zone 3 · reading 20	0.2 °C	+0.3	zone C, within 1 sigma	in control	—

Degenerate data · 12 identical readings — not a perfect process, a gauge that only resolves to 0.5 N·m. The mean moving range is 0 → sigma is 0 → the limits collapse onto the centre line: until the gauge improves this chart cannot report a single signal, and the component has to say so instead of drawing a clean picture.

Seal torque · coarse gauge

Gauge resolves to 0.5 N·m; every reading lands on the same graduation

Seal torque (N·m)CL 4 N·m12 checksnot judged

3.03.54.04.55.0

T-01T-03T-05T-07T-09T-12

Rules in force1. Beyond limits2. Run on one side3. Trend5. 2 of 3 beyond 2σ6. 4 of 5 beyond 1σ

12 checks drawn as measured; with no limits there is nothing for a rule to fire on.

every measurement identical, so the limits collapse onto the centre line. A signal is drawn where its pattern completes; hovering or focusing a point brackets the whole pattern it belongs to. Arrow keys walk the points, up and down jump between signals, Enter pins the readout and Escape clears it.

Seal torque · coarse gauge: every check in time order with its distance from the centre line. Centre line 4 N·m; every measurement identical, so the limits collapse onto the centre line. Rules in force: 1 Beyond limits, 2 Run on one side, 3 Trend, 5 2 of 3 beyond 2σ, 6 4 of 5 beyond 1σ. Run length 8, trend length 6.
check	Seal torque (N·m)	Sigma from centre	Zone	Signal	Note
T-01	4 N·m	—	—	in control	—
T-02	4 N·m	—	—	in control	—
T-03	4 N·m	—	—	in control	—
T-04	4 N·m	—	—	in control	—
T-05	4 N·m	—	—	in control	—
T-06	4 N·m	—	—	in control	—
T-07	4 N·m	—	—	in control	—
T-08	4 N·m	—	—	in control	—
T-09	4 N·m	—	—	in control	—
T-10	4 N·m	—	—	in control	—
T-11	4 N·m	—	—	in control	—
T-12	4 N·m	—	—	in control	—

Degenerate data · a single point: no moving range means no sigma, so only the point and the centre line are drawn, with a note that limits need at least two measurements.

Bore diameter · first article

A control chart of one point is a dot — and still has to render

Bore diameter (mm)CL 73.4 mm1 measurementnot judged

70727476

First article

Rules in force1. Beyond limits2. Run on one side3. Trend5. 2 of 3 beyond 2σ6. 4 of 5 beyond 1σ

1 measurement drawn as measured; with no limits there is nothing for a rule to fire on.

one measurement only, which is not enough to estimate limits. A signal is drawn where its pattern completes; hovering or focusing a point brackets the whole pattern it belongs to. Arrow keys walk the points, up and down jump between signals, Enter pins the readout and Escape clears it.

Bore diameter · first article: every measurement in time order with its distance from the centre line. Centre line 73.4 mm; one measurement only, which is not enough to estimate limits. Rules in force: 1 Beyond limits, 2 Run on one side, 3 Trend, 5 2 of 3 beyond 2σ, 6 4 of 5 beyond 1σ. Run length 8, trend length 6.
measurement	Bore diameter (mm)	Sigma from centre	Zone	Signal	Note
First article	73.4 mm	—	—	in control	—

96 samples, limits frozen on the first 30 (dotted divider). The maximum of 51.0 s never reaches the 52.98 s upper limit — rule 1 on its own would call this service healthy, while rules 2, 5 and 6 report it eight times. Past 64 points only signals get a marker (a full dot grid smears into a band and hides the line it is meant to describe) and the x-axis labels thin out by a stride — but every point is still hoverable and reachable by keyboard, with every reading in the sr-only table.

Queue wait p95 · payments API

Limits frozen on the first 30 samples of the known-good week

p95 queue wait (s)CL 42.13 sUCL 52.98 s · LCL 31.28 s1σ 3.62 s96 samples8 signals

304050

CLUCLLCL

#1#13#25#37#49#61#73#85#96

Rules in force1. Beyond limits2. Run on one side3. Trend5. 2 of 3 beyond 2σ6. 4 of 5 beyond 1σ

sigma from the mean moving range of 30 samples. Limits frozen on the first 30 samples (dotted divider) and held for everything after them. A signal is drawn where its pattern completes; hovering or focusing a point brackets the whole pattern it belongs to. Past 64 points only signals are marked — the line carries the rest, and every point is still reachable. Arrow keys walk the points, up and down jump between signals, Enter pins the readout and Escape clears it.

Queue wait p95 · payments API: every sample in time order with its distance from the centre line. Centre line 42.13 s, control limits 31.28 s to 52.98 s; sigma from the mean moving range of 30 samples. Rules in force: 1 Beyond limits, 2 Run on one side, 3 Trend, 5 2 of 3 beyond 2σ, 6 4 of 5 beyond 1σ. Run length 8, trend length 6.
sample	p95 queue wait (s)	Sigma from centre	Zone	Baseline	Signal	Note
#1	42.86 s	+0.2	zone C, within 1 sigma	yes	in control	—
#2	49.18 s	+1.9	zone B, 1 to 2 sigma	yes	in control	—
#3	46.11 s	+1.1	zone B, 1 to 2 sigma	yes	in control	—
#4	41.79 s	−0.1	zone C, within 1 sigma	yes	in control	—
#5	44.75 s	+0.7	zone C, within 1 sigma	yes	in control	—
#6	41 s	−0.3	zone C, within 1 sigma	yes	in control	—
#7	43.57 s	+0.4	zone C, within 1 sigma	yes	in control	—
#8	41.61 s	−0.1	zone C, within 1 sigma	yes	in control	—
#9	40.34 s	−0.5	zone C, within 1 sigma	yes	in control	—
#10	47.1 s	+1.4	zone B, 1 to 2 sigma	yes	in control	—
#11	35.71 s	−1.8	zone B, 1 to 2 sigma	yes	in control	—
#12	43.89 s	+0.5	zone C, within 1 sigma	yes	in control	—
#13	42.11 s	−0.0	zone C, within 1 sigma	yes	in control	—
#14	44.73 s	+0.7	zone C, within 1 sigma	yes	in control	—
#15	40.3 s	−0.5	zone C, within 1 sigma	yes	in control	—
#16	44.1 s	+0.5	zone C, within 1 sigma	yes	in control	—
#17	41.87 s	−0.1	zone C, within 1 sigma	yes	in control	—
#18	47.86 s	+1.6	zone B, 1 to 2 sigma	yes	in control	—
#19	45.58 s	+1.0	zone C, within 1 sigma	yes	in control	—
#20	41.4 s	−0.2	zone C, within 1 sigma	yes	in control	—
#21	40.33 s	−0.5	zone C, within 1 sigma	yes	in control	—
#22	34.93 s	−2.0	zone B, 1 to 2 sigma	yes	in control	—
#23	41.89 s	−0.1	zone C, within 1 sigma	yes	in control	—
#24	45.24 s	+0.9	zone C, within 1 sigma	yes	in control	—
#25	38.78 s	−0.9	zone C, within 1 sigma	yes	part of 9 points in a row below the centre line	—
#26	37.36 s	−1.3	zone B, 1 to 2 sigma	yes	part of 9 points in a row below the centre line	—
#27	41.29 s	−0.2	zone C, within 1 sigma	yes	part of 9 points in a row below the centre line	—
#28	38.31 s	−1.1	zone B, 1 to 2 sigma	yes	part of 9 points in a row below the centre line	—
#29	41.73 s	−0.1	zone C, within 1 sigma	yes	part of 9 points in a row below the centre line	—
#30	38.25 s	−1.1	zone B, 1 to 2 sigma	yes	part of 9 points in a row below the centre line	—
#31	39.18 s	−0.8	zone C, within 1 sigma	no	part of 9 points in a row below the centre line	—
#32	41.97 s	−0.0	zone C, within 1 sigma	no	rule 2, 9 points in a row below the centre line	—
#33	41.85 s	−0.1	zone C, within 1 sigma	no	part of 9 points in a row below the centre line	—
#34	42.43 s	+0.1	zone C, within 1 sigma	no	in control	—
#35	41.49 s	−0.2	zone C, within 1 sigma	no	in control	—
#36	45.5 s	+0.9	zone C, within 1 sigma	no	in control	—
#37	40.22 s	−0.5	zone C, within 1 sigma	no	in control	—
#38	38.9 s	−0.9	zone C, within 1 sigma	no	in control	—
#39	43.87 s	+0.5	zone C, within 1 sigma	no	in control	—
#40	44.72 s	+0.7	zone C, within 1 sigma	no	in control	—
#41	47.81 s	+1.6	zone B, 1 to 2 sigma	no	in control	—
#42	40.89 s	−0.3	zone C, within 1 sigma	no	in control	—
#43	49.29 s	+2.0	zone B, 1 to 2 sigma	no	in control	—
#44	38.14 s	−1.1	zone B, 1 to 2 sigma	no	part of 8 points in a row below the centre line	—
#45	38.79 s	−0.9	zone C, within 1 sigma	no	part of 8 points in a row below the centre line	—
#46	39.64 s	−0.7	zone C, within 1 sigma	no	part of 8 points in a row below the centre line	—
#47	40.73 s	−0.4	zone C, within 1 sigma	no	part of 8 points in a row below the centre line	—
#48	41.84 s	−0.1	zone C, within 1 sigma	no	part of 8 points in a row below the centre line	—
#49	41.78 s	−0.1	zone C, within 1 sigma	no	part of 8 points in a row below the centre line	—
#50	38.49 s	−1.0	zone B, 1 to 2 sigma	no	part of 8 points in a row below the centre line	—
#51	41.56 s	−0.2	zone C, within 1 sigma	no	rule 2, 8 points in a row below the centre line	—
#52	45.29 s	+0.9	zone C, within 1 sigma	no	in control	—
#53	44.32 s	+0.6	zone C, within 1 sigma	no	in control	—
#54	37.93 s	−1.2	zone B, 1 to 2 sigma	no	in control	—
#55	43.33 s	+0.3	zone C, within 1 sigma	no	in control	—
#56	47.55 s	+1.5	zone B, 1 to 2 sigma	no	in control	—
#57	40.97 s	−0.3	zone C, within 1 sigma	no	in control	—
#58	45.8 s	+1.0	zone B, 1 to 2 sigma	no	in control	—
#59	38.15 s	−1.1	zone B, 1 to 2 sigma	no	in control	—
#60	44.98 s	+0.8	zone C, within 1 sigma	no	in control	—
#61	42.38 s	+0.1	zone C, within 1 sigma	no	in control	—
#62	44.35 s	+0.6	zone C, within 1 sigma	no	in control	—
#63	43.11 s	+0.3	zone C, within 1 sigma	no	in control	—
#64	41.88 s	−0.1	zone C, within 1 sigma	no	in control	—
#65	42.49 s	+0.1	zone C, within 1 sigma	no	in control	—
#66	38.81 s	−0.9	zone C, within 1 sigma	no	in control	—
#67	43.91 s	+0.5	zone C, within 1 sigma	no	in control	—
#68	38.66 s	−1.0	zone C, within 1 sigma	no	part of 6 points in a row rising	—
#69	39.37 s	−0.8	zone C, within 1 sigma	no	part of 6 points in a row rising	—
#70	41.6 s	−0.1	zone C, within 1 sigma	no	part of 6 points in a row rising	—
#71	42.83 s	+0.2	zone C, within 1 sigma	no	part of 6 points in a row rising; part of 26 points in a row above the centre line	—
#72	46.29 s	+1.1	zone B, 1 to 2 sigma	no	part of 6 points in a row rising; part of 26 points in a row above the centre line	—
#73	48.61 s	+1.8	zone B, 1 to 2 sigma	no	rule 3, 6 points in a row rising; part of 26 points in a row above the centre line	—
#74	44.84 s	+0.7	zone C, within 1 sigma	no	part of 26 points in a row above the centre line	—
#75	42.92 s	+0.2	zone C, within 1 sigma	no	part of 2 of 3 points beyond 2σ above the centre line; part of 26 points in a row above the centre line	—
#76	49.38 s	+2.0	zone A, 2 to 3 sigma	no	part of 2 of 3 points beyond 2σ above the centre line; part of 26 points in a row above the centre line	—
#77	49.41 s	+2.0	zone A, 2 to 3 sigma	no	rule 5, 2 of 3 points beyond 2σ above the centre line; part of 26 points in a row above the centre line	—
#78	44.19 s	+0.6	zone C, within 1 sigma	no	rule 2, 26 points in a row above the centre line; part of 2 of 3 points beyond 2σ above the centre line	—
#79	46.98 s	+1.3	zone B, 1 to 2 sigma	no	part of 26 points in a row above the centre line	—
#80	42.22 s	+0.0	zone C, within 1 sigma	no	part of 26 points in a row above the centre line	—
#81	43.58 s	+0.4	zone C, within 1 sigma	no	part of 26 points in a row above the centre line	—
#82	45.32 s	+0.9	zone C, within 1 sigma	no	part of 26 points in a row above the centre line	—
#83	49.54 s	+2.0	zone A, 2 to 3 sigma	no	part of 26 points in a row above the centre line; part of 2 of 3 points beyond 2σ above the centre line; part of 4 of 5 points beyond 1σ above the centre line	—
#84	44.99 s	+0.8	zone C, within 1 sigma	no	part of 26 points in a row above the centre line; part of 2 of 3 points beyond 2σ above the centre line; part of 4 of 5 points beyond 1σ above the centre line	—
#85	51 s	+2.5	zone A, 2 to 3 sigma	no	rule 5, 2 of 3 points beyond 2σ above the centre line; part of 26 points in a row above the centre line; part of 4 of 5 points beyond 1σ above the centre line	—
#86	47.39 s	+1.5	zone B, 1 to 2 sigma	no	part of 26 points in a row above the centre line; part of 2 of 3 points beyond 2σ above the centre line; part of 4 of 5 points beyond 1σ above the centre line	—
#87	49.87 s	+2.1	zone A, 2 to 3 sigma	no	rule 6, 4 of 5 points beyond 1σ above the centre line; part of 26 points in a row above the centre line; part of 2 of 3 points beyond 2σ above the centre line	—
#88	50.85 s	+2.4	zone A, 2 to 3 sigma	no	part of 26 points in a row above the centre line; part of 2 of 3 points beyond 2σ above the centre line; part of 4 of 5 points beyond 1σ above the centre line	—
#89	49.66 s	+2.1	zone A, 2 to 3 sigma	no	part of 26 points in a row above the centre line; part of 2 of 3 points beyond 2σ above the centre line; part of 4 of 5 points beyond 1σ above the centre line	—
#90	49.62 s	+2.1	zone A, 2 to 3 sigma	no	part of 26 points in a row above the centre line; part of 2 of 3 points beyond 2σ above the centre line; part of 4 of 5 points beyond 1σ above the centre line	—
#91	47.94 s	+1.6	zone B, 1 to 2 sigma	no	part of 26 points in a row above the centre line; part of 2 of 3 points beyond 2σ above the centre line; part of 4 of 5 points beyond 1σ above the centre line	—
#92	47.45 s	+1.5	zone B, 1 to 2 sigma	no	part of 26 points in a row above the centre line; part of 4 of 5 points beyond 1σ above the centre line; part of 2 of 3 points beyond 2σ above the centre line	—
#93	51 s	+2.5	zone A, 2 to 3 sigma	no	part of 26 points in a row above the centre line; part of 4 of 5 points beyond 1σ above the centre line; part of 2 of 3 points beyond 2σ above the centre line	—
#94	49.79 s	+2.1	zone A, 2 to 3 sigma	no	rule 5, 2 of 3 points beyond 2σ above the centre line; part of 26 points in a row above the centre line; part of 4 of 5 points beyond 1σ above the centre line	—
#95	42.94 s	+0.2	zone C, within 1 sigma	no	part of 26 points in a row above the centre line; part of 4 of 5 points beyond 1σ above the centre line; part of 2 of 3 points beyond 2σ above the centre line	—
#96	47.15 s	+1.4	zone B, 1 to 2 sigma	no	part of 26 points in a row above the centre line; part of 4 of 5 points beyond 1σ above the centre line	—

sigmaMethod="stdev" · the same data through the sample standard deviation: sigma 0.755 → 1.069, upper limit 252.14 → 253.09, and the early warning from rule 6 disappears outright (four signals become three). This is why SPC sticks with the moving range — the standard deviation is inflated by the very drift you are hunting for.

Fill weight · line 3

Target 250 g · one measurement per batch, oldest first

Fill weight (g)CL 249.88 gUCL 253.09 g · LCL 246.67 g1σ 1.07 g30 batches3 signals

250.00

CLUCLLCL

B-01B-05B-09B-13B-17B-21B-25B-30

Rules in force1. Beyond limits2. Run on one side3. Trend5. 2 of 3 beyond 2σ6. 4 of 5 beyond 1σ

sigma from the standard deviation of 30 batches. A signal is drawn where its pattern completes; hovering or focusing a point brackets the whole pattern it belongs to. Arrow keys walk the points, up and down jump between signals, Enter pins the readout and Escape clears it.

Fill weight · line 3: every batch in time order with its distance from the centre line. Centre line 249.88 g, control limits 246.67 g to 253.09 g; sigma from the standard deviation of 30 batches. Rules in force: 1 Beyond limits, 2 Run on one side, 3 Trend, 5 2 of 3 beyond 2σ, 6 4 of 5 beyond 1σ. Run length 8, trend length 6.
batch	Fill weight (g)	Sigma from centre	Zone	Signal	Note
B-01	249.77 g	−0.1	zone C, within 1 sigma	in control	—
B-02	250.51 g	+0.6	zone C, within 1 sigma	in control	—
B-03	250.06 g	+0.2	zone C, within 1 sigma	in control	—
B-04	250.55 g	+0.6	zone C, within 1 sigma	in control	—
B-05	249.93 g	+0.0	zone C, within 1 sigma	in control	—
B-06	248.79 g	−1.0	zone B, 1 to 2 sigma	in control	—
B-07	250.07 g	+0.2	zone C, within 1 sigma	in control	—
B-08	249.53 g	−0.3	zone C, within 1 sigma	in control	—
B-09	249.65 g	−0.2	zone C, within 1 sigma	in control	—
B-10	250.14 g	+0.2	zone C, within 1 sigma	in control	—
B-11	248.42 g	−1.4	zone B, 1 to 2 sigma	in control	—
B-12	249.71 g	−0.2	zone C, within 1 sigma	in control	—
B-13	253.9 g	+3.8	beyond the control limit	rule 1, beyond the upper control limit	hopper jam cleared by hand
B-14	248.4 g	−1.4	zone B, 1 to 2 sigma	part of 10 points in a row below the centre line	new resin lot
B-15	249.31 g	−0.5	zone C, within 1 sigma	part of 10 points in a row below the centre line	—
B-16	248.7 g	−1.1	zone B, 1 to 2 sigma	part of 10 points in a row below the centre line	—
B-17	249.1 g	−0.7	zone C, within 1 sigma	part of 10 points in a row below the centre line	—
B-18	249.34 g	−0.5	zone C, within 1 sigma	part of 10 points in a row below the centre line	—
B-19	248.99 g	−0.8	zone C, within 1 sigma	part of 10 points in a row below the centre line; part of 10 points in a row rising	—
B-20	249.03 g	−0.8	zone C, within 1 sigma	part of 10 points in a row below the centre line; part of 10 points in a row rising	—
B-21	249.08 g	−0.7	zone C, within 1 sigma	rule 2, 10 points in a row below the centre line; part of 10 points in a row rising	—
B-22	249.4 g	−0.4	zone C, within 1 sigma	part of 10 points in a row below the centre line; part of 10 points in a row rising	—
B-23	249.7 g	−0.2	zone C, within 1 sigma	part of 10 points in a row below the centre line; part of 10 points in a row rising	—
B-24	250 g	+0.1	zone C, within 1 sigma	rule 3, 10 points in a row rising	—
B-25	250.35 g	+0.4	zone C, within 1 sigma	part of 10 points in a row rising	—
B-26	250.7 g	+0.8	zone C, within 1 sigma	part of 10 points in a row rising	—
B-27	251.05 g	+1.1	zone B, 1 to 2 sigma	part of 10 points in a row rising	—
B-28	251.4 g	+1.4	zone B, 1 to 2 sigma	part of 10 points in a row rising	—
B-29	250.6 g	+0.7	zone C, within 1 sigma	in control	—
B-30	250.2 g	+0.3	zone C, within 1 sigma	in control	—

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Fill weight · line 3: every batch in time order with its distance from the centre line. Centre line 249.88 g, control limits 247.62 g to 252.14 g; sigma from the mean moving range of 30 batches. Rules in force: 1 Beyond limits, 2 Run on one side, 3 Trend, 5 2 of 3 beyond 2σ, 6 4 of 5 beyond 1σ. Run length 8, trend length 6.

batch

Fill weight (g)

Sigma from centre

Zone

Signal

Note

B-01

249.77 g

−0.1

zone C, within 1 sigma

in control

—

B-02

250.51 g

+0.8

zone C, within 1 sigma

in control

—

B-03

250.06 g

+0.2

zone C, within 1 sigma

in control

—

B-04

250.55 g

+0.9

zone C, within 1 sigma

in control

—

B-05

249.93 g

+0.1

zone C, within 1 sigma

in control

—

B-06

248.79 g

−1.4

zone B, 1 to 2 sigma

in control

—

B-07

250.07 g

+0.3

zone C, within 1 sigma

in control

—

B-08

249.53 g

−0.5

zone C, within 1 sigma

in control

—

B-09

249.65 g

−0.3

zone C, within 1 sigma

in control

—

B-10

250.14 g

+0.3

zone C, within 1 sigma

in control

—

B-11

248.42 g

−1.9

zone B, 1 to 2 sigma

in control

—

B-12

249.71 g

−0.2

zone C, within 1 sigma

in control

—

B-13

253.9 g

+5.3

beyond the control limit

rule 1, beyond the upper control limit

hopper jam cleared by hand

B-14

248.4 g

−2.0

zone B, 1 to 2 sigma

part of 10 points in a row below the centre line

new resin lot

B-15

249.31 g

−0.8

zone C, within 1 sigma

part of 10 points in a row below the centre line

—

B-16

248.7 g

−1.6

zone B, 1 to 2 sigma

part of 4 of 5 points beyond 1σ below the centre line; part of 10 points in a row below the centre line

—

B-17

249.1 g

−1.0

zone B, 1 to 2 sigma

part of 4 of 5 points beyond 1σ below the centre line; part of 10 points in a row below the centre line

—

B-18

249.34 g

−0.7

zone C, within 1 sigma

part of 4 of 5 points beyond 1σ below the centre line; part of 10 points in a row below the centre line

—

B-19

248.99 g

−1.2

zone B, 1 to 2 sigma

part of 4 of 5 points beyond 1σ below the centre line; part of 10 points in a row below the centre line; part of 10 points in a row rising

—

B-20

249.03 g

−1.1

zone B, 1 to 2 sigma

rule 6, 4 of 5 points beyond 1σ below the centre line; part of 10 points in a row below the centre line; part of 10 points in a row rising

—

B-21

249.08 g

−1.1

zone B, 1 to 2 sigma

rule 2, 10 points in a row below the centre line; part of 4 of 5 points beyond 1σ below the centre line; part of 10 points in a row rising

—

B-22

249.4 g

−0.6

zone C, within 1 sigma

part of 10 points in a row below the centre line; part of 10 points in a row rising

—

B-23

249.7 g

−0.2

zone C, within 1 sigma

part of 10 points in a row below the centre line; part of 10 points in a row rising

—

B-24

250 g

+0.2

zone C, within 1 sigma

rule 3, 10 points in a row rising

—

B-25

250.35 g

+0.6

zone C, within 1 sigma

part of 10 points in a row rising

—

B-26

250.7 g

+1.1

zone B, 1 to 2 sigma

part of 10 points in a row rising

—

B-27

251.05 g

+1.6

zone B, 1 to 2 sigma

part of 10 points in a row rising

—

B-28

251.4 g

+2.0

zone A, 2 to 3 sigma

part of 10 points in a row rising

—

B-29

250.6 g

+1.0

zone C, within 1 sigma

in control

—

B-30

250.2 g

+0.4

zone C, within 1 sigma

in control

—

Reflow zone 3 · deviation from set point: every reading in time order with its distance from the centre line. Centre line 0 °C, control limits -2.4 °C to 2.4 °C; limits supplied, not estimated from this data. Rules in force: 1 Beyond limits, 2 Run on one side, 3 Trend, 5 2 of 3 beyond 2σ, 6 4 of 5 beyond 1σ. Run length 8, trend length 6.

reading

Deviation from set point (°C)

Sigma from centre

Zone

Signal

Note

Reflow oven 4 · zone 3 · reading 01

-0.4 °C

−0.5

zone C, within 1 sigma

in control

—

Reflow oven 4 · zone 3 · reading 02

-0.1 °C

−0.1

zone C, within 1 sigma

in control

—

Reflow oven 4 · zone 3 · reading 03

-0.21 °C

−0.3

zone C, within 1 sigma

in control

—

Reflow oven 4 · zone 3 · reading 04

-1.03 °C

−1.3

zone B, 1 to 2 sigma

in control

—

Reflow oven 4 · zone 3 · reading 05

-0.96 °C

−1.2

zone B, 1 to 2 sigma

in control

—

Reflow oven 4 · zone 3 · reading 06

-0.2 °C

−0.3

zone C, within 1 sigma

in control

—

Reflow oven 4 · zone 3 · reading 07

-0.28 °C

−0.4

zone C, within 1 sigma

in control

—

Reflow oven 4 · zone 3 · reading 08

0.23 °C

+0.3

zone C, within 1 sigma

in control

—

Reflow oven 4 · zone 3 · reading 09

-0.53 °C

−0.7

zone C, within 1 sigma

in control

—

Reflow oven 4 · zone 3 · reading 10

-0.62 °C

−0.8

zone C, within 1 sigma

in control

—

Reflow oven 4 · zone 3 · reading 11

-0.49 °C

−0.6

zone C, within 1 sigma

in control

—

Reflow oven 4 · zone 3 · reading 12

0.1 °C

+0.1

zone C, within 1 sigma

part of 2 of 3 points beyond 2σ below the centre line; part of 4 of 5 points beyond 1σ below the centre line

—

Reflow oven 4 · zone 3 · reading 13

-1.9 °C

−2.4

zone A, 2 to 3 sigma

part of 2 of 3 points beyond 2σ below the centre line; part of 4 of 5 points beyond 1σ below the centre line

—

Reflow oven 4 · zone 3 · reading 14

-2.4 °C

−3.0

zone A, 2 to 3 sigma

rule 5, 2 of 3 points beyond 2σ below the centre line; part of 4 of 5 points beyond 1σ below the centre line

—

Reflow oven 4 · zone 3 · reading 15

-2.95 °C

−3.7

beyond the control limit

rule 1, beyond the lower control limit; part of 2 of 3 points beyond 2σ below the centre line; part of 4 of 5 points beyond 1σ below the centre line

extraction fan tripped

Reflow oven 4 · zone 3 · reading 16

-1.6 °C

−2.0

zone B, 1 to 2 sigma

rule 6, 4 of 5 points beyond 1σ below the centre line; part of 2 of 3 points beyond 2σ below the centre line

—

Reflow oven 4 · zone 3 · reading 17

-0.8 °C

−1.0

zone C, within 1 sigma

part of 4 of 5 points beyond 1σ below the centre line

—

Reflow oven 4 · zone 3 · reading 18

0.4 °C

+0.5

zone C, within 1 sigma

in control

—

Reflow oven 4 · zone 3 · reading 19

1.1 °C

+1.4

zone B, 1 to 2 sigma

in control

—

Reflow oven 4 · zone 3 · reading 20

0.2 °C

+0.3

zone C, within 1 sigma

in control

—

Queue wait p95 · payments API: every sample in time order with its distance from the centre line. Centre line 42.13 s, control limits 31.28 s to 52.98 s; sigma from the mean moving range of 30 samples. Rules in force: 1 Beyond limits, 2 Run on one side, 3 Trend, 5 2 of 3 beyond 2σ, 6 4 of 5 beyond 1σ. Run length 8, trend length 6.

sample

p95 queue wait (s)

Sigma from centre

Zone

Baseline

Signal

Note

42.86 s

+0.2

zone C, within 1 sigma

yes

in control

—

49.18 s

+1.9

zone B, 1 to 2 sigma

yes

in control

—

46.11 s

+1.1

zone B, 1 to 2 sigma

yes

in control

—

41.79 s

−0.1

zone C, within 1 sigma

yes

in control

—

44.75 s

+0.7

zone C, within 1 sigma

yes

in control

—

41 s

−0.3

zone C, within 1 sigma

yes

in control

—

43.57 s

+0.4

zone C, within 1 sigma

yes

in control

—

41.61 s

−0.1

zone C, within 1 sigma

yes

in control

—

40.34 s

−0.5

zone C, within 1 sigma

yes

in control

—

#10

47.1 s

+1.4

zone B, 1 to 2 sigma

yes

in control

—

#11

35.71 s

−1.8

zone B, 1 to 2 sigma

yes

in control

—

#12

43.89 s

+0.5

zone C, within 1 sigma

yes

in control

—

#13

42.11 s

−0.0

zone C, within 1 sigma

yes

in control

—

#14

44.73 s

+0.7

zone C, within 1 sigma

yes

in control

—

#15

40.3 s

−0.5

zone C, within 1 sigma

yes

in control

—

#16

44.1 s

+0.5

zone C, within 1 sigma

yes

in control

—

#17

41.87 s

−0.1

zone C, within 1 sigma

yes

in control

—

#18

47.86 s

+1.6

zone B, 1 to 2 sigma

yes

in control

—

#19

45.58 s

+1.0

zone C, within 1 sigma

yes

in control

—

#20

41.4 s

−0.2

zone C, within 1 sigma

yes

in control

—

#21

40.33 s

−0.5

zone C, within 1 sigma

yes

in control

—

#22

34.93 s

−2.0

zone B, 1 to 2 sigma

yes

in control

—

#23

41.89 s

−0.1

zone C, within 1 sigma

yes

in control

—

#24

45.24 s

+0.9

zone C, within 1 sigma

yes

in control

—

#25

38.78 s

−0.9

zone C, within 1 sigma

yes

part of 9 points in a row below the centre line

—

#26

37.36 s

−1.3

zone B, 1 to 2 sigma

yes

part of 9 points in a row below the centre line

—

#27

41.29 s

−0.2

zone C, within 1 sigma

yes

part of 9 points in a row below the centre line

—

#28

38.31 s

−1.1

zone B, 1 to 2 sigma

yes

part of 9 points in a row below the centre line

—

#29

41.73 s

−0.1

zone C, within 1 sigma

yes

part of 9 points in a row below the centre line

—

#30

38.25 s

−1.1

zone B, 1 to 2 sigma

yes

part of 9 points in a row below the centre line

—

#31

39.18 s

−0.8

zone C, within 1 sigma

part of 9 points in a row below the centre line

—

#32

41.97 s

−0.0

zone C, within 1 sigma

rule 2, 9 points in a row below the centre line

—

#33

41.85 s

−0.1

zone C, within 1 sigma

part of 9 points in a row below the centre line

—

#34

42.43 s

+0.1

zone C, within 1 sigma

in control

—

#35

41.49 s

−0.2

zone C, within 1 sigma

in control

—

#36

45.5 s

+0.9

zone C, within 1 sigma

in control

—

#37

40.22 s

−0.5

zone C, within 1 sigma

in control

—

#38

38.9 s

−0.9

zone C, within 1 sigma

in control

—

#39

43.87 s

+0.5

zone C, within 1 sigma

in control

—

#40

44.72 s

+0.7

zone C, within 1 sigma

in control

—

#41

47.81 s

+1.6

zone B, 1 to 2 sigma

in control

—

#42

40.89 s

−0.3

zone C, within 1 sigma

in control

—

#43

49.29 s

+2.0

zone B, 1 to 2 sigma

in control

—

#44

38.14 s

−1.1

zone B, 1 to 2 sigma

part of 8 points in a row below the centre line

—

#45

38.79 s

−0.9

zone C, within 1 sigma

part of 8 points in a row below the centre line

—

#46

39.64 s

−0.7

zone C, within 1 sigma

part of 8 points in a row below the centre line

—

#47

40.73 s

−0.4

zone C, within 1 sigma

part of 8 points in a row below the centre line

—

#48

41.84 s

−0.1

zone C, within 1 sigma

part of 8 points in a row below the centre line

—

#49

41.78 s

−0.1

zone C, within 1 sigma

part of 8 points in a row below the centre line

—

#50

38.49 s

−1.0

zone B, 1 to 2 sigma

part of 8 points in a row below the centre line

—

#51

41.56 s

−0.2

zone C, within 1 sigma

rule 2, 8 points in a row below the centre line

—

#52

45.29 s

+0.9

zone C, within 1 sigma

in control

—

#53

44.32 s

+0.6

zone C, within 1 sigma

in control

—

#54

37.93 s

−1.2

zone B, 1 to 2 sigma

in control

—

#55

43.33 s

+0.3

zone C, within 1 sigma

in control

—

#56

47.55 s

+1.5

zone B, 1 to 2 sigma

in control

—

#57

40.97 s

−0.3

zone C, within 1 sigma

in control

—

#58

45.8 s

+1.0

zone B, 1 to 2 sigma

in control

—

#59

38.15 s

−1.1

zone B, 1 to 2 sigma

in control

—

#60

44.98 s

+0.8

zone C, within 1 sigma

in control

—

#61

42.38 s

+0.1

zone C, within 1 sigma

in control

—

#62

44.35 s

+0.6

zone C, within 1 sigma

in control

—

#63

43.11 s

+0.3

zone C, within 1 sigma

in control

—

#64

41.88 s

−0.1

zone C, within 1 sigma

in control

—

#65

42.49 s

+0.1

zone C, within 1 sigma

in control

—

#66

38.81 s

−0.9

zone C, within 1 sigma

in control

—

#67

43.91 s

+0.5

zone C, within 1 sigma

in control

—

#68

38.66 s

−1.0

zone C, within 1 sigma

part of 6 points in a row rising

—

#69

39.37 s

−0.8

zone C, within 1 sigma

part of 6 points in a row rising

—

#70

41.6 s

−0.1

zone C, within 1 sigma

part of 6 points in a row rising

—

#71

42.83 s

+0.2

zone C, within 1 sigma

part of 6 points in a row rising; part of 26 points in a row above the centre line

—

#72

46.29 s

+1.1

zone B, 1 to 2 sigma

part of 6 points in a row rising; part of 26 points in a row above the centre line

—

#73

48.61 s

+1.8

zone B, 1 to 2 sigma

rule 3, 6 points in a row rising; part of 26 points in a row above the centre line

—

#74

44.84 s

+0.7

zone C, within 1 sigma

part of 26 points in a row above the centre line

—

#75

42.92 s

+0.2

zone C, within 1 sigma

part of 2 of 3 points beyond 2σ above the centre line; part of 26 points in a row above the centre line

—

#76

49.38 s

+2.0

zone A, 2 to 3 sigma

part of 2 of 3 points beyond 2σ above the centre line; part of 26 points in a row above the centre line

—

#77

49.41 s

+2.0

zone A, 2 to 3 sigma

rule 5, 2 of 3 points beyond 2σ above the centre line; part of 26 points in a row above the centre line

—

#78

44.19 s

+0.6

zone C, within 1 sigma

rule 2, 26 points in a row above the centre line; part of 2 of 3 points beyond 2σ above the centre line

—

#79

46.98 s

+1.3

zone B, 1 to 2 sigma

part of 26 points in a row above the centre line

—

#80

42.22 s

+0.0

zone C, within 1 sigma

part of 26 points in a row above the centre line

—

#81

43.58 s

+0.4

zone C, within 1 sigma

part of 26 points in a row above the centre line

—

#82

45.32 s

+0.9

zone C, within 1 sigma

part of 26 points in a row above the centre line

—

#83

49.54 s

+2.0

zone A, 2 to 3 sigma

part of 26 points in a row above the centre line; part of 2 of 3 points beyond 2σ above the centre line; part of 4 of 5 points beyond 1σ above the centre line

—

#84

44.99 s

+0.8

zone C, within 1 sigma

part of 26 points in a row above the centre line; part of 2 of 3 points beyond 2σ above the centre line; part of 4 of 5 points beyond 1σ above the centre line

—

#85

51 s

+2.5

zone A, 2 to 3 sigma

rule 5, 2 of 3 points beyond 2σ above the centre line; part of 26 points in a row above the centre line; part of 4 of 5 points beyond 1σ above the centre line

—

#86

47.39 s

+1.5

zone B, 1 to 2 sigma

part of 26 points in a row above the centre line; part of 2 of 3 points beyond 2σ above the centre line; part of 4 of 5 points beyond 1σ above the centre line

—

#87

49.87 s

+2.1

zone A, 2 to 3 sigma

rule 6, 4 of 5 points beyond 1σ above the centre line; part of 26 points in a row above the centre line; part of 2 of 3 points beyond 2σ above the centre line

—

#88

50.85 s

+2.4

zone A, 2 to 3 sigma

part of 26 points in a row above the centre line; part of 2 of 3 points beyond 2σ above the centre line; part of 4 of 5 points beyond 1σ above the centre line

—

#89

49.66 s

+2.1

zone A, 2 to 3 sigma

part of 26 points in a row above the centre line; part of 2 of 3 points beyond 2σ above the centre line; part of 4 of 5 points beyond 1σ above the centre line

—

#90

49.62 s

+2.1

zone A, 2 to 3 sigma

part of 26 points in a row above the centre line; part of 2 of 3 points beyond 2σ above the centre line; part of 4 of 5 points beyond 1σ above the centre line

—

#91

47.94 s

+1.6

zone B, 1 to 2 sigma

part of 26 points in a row above the centre line; part of 2 of 3 points beyond 2σ above the centre line; part of 4 of 5 points beyond 1σ above the centre line

—

#92

47.45 s

+1.5

zone B, 1 to 2 sigma

part of 26 points in a row above the centre line; part of 4 of 5 points beyond 1σ above the centre line; part of 2 of 3 points beyond 2σ above the centre line

—

#93

51 s

+2.5

zone A, 2 to 3 sigma

part of 26 points in a row above the centre line; part of 4 of 5 points beyond 1σ above the centre line; part of 2 of 3 points beyond 2σ above the centre line

—

#94

49.79 s

+2.1

zone A, 2 to 3 sigma

rule 5, 2 of 3 points beyond 2σ above the centre line; part of 26 points in a row above the centre line; part of 4 of 5 points beyond 1σ above the centre line

—

#95

42.94 s

+0.2

zone C, within 1 sigma

part of 26 points in a row above the centre line; part of 4 of 5 points beyond 1σ above the centre line; part of 2 of 3 points beyond 2σ above the centre line

—

#96

47.15 s

+1.4

zone B, 1 to 2 sigma

part of 26 points in a row above the centre line; part of 4 of 5 points beyond 1σ above the centre line

—

Fill weight · line 3: every batch in time order with its distance from the centre line. Centre line 249.88 g, control limits 246.67 g to 253.09 g; sigma from the standard deviation of 30 batches. Rules in force: 1 Beyond limits, 2 Run on one side, 3 Trend, 5 2 of 3 beyond 2σ, 6 4 of 5 beyond 1σ. Run length 8, trend length 6.

batch

Fill weight (g)

Sigma from centre

Zone

Signal

Note

B-01

249.77 g

−0.1

zone C, within 1 sigma

in control

—

B-02

250.51 g

+0.6

zone C, within 1 sigma

in control

—

B-03

250.06 g

+0.2

zone C, within 1 sigma

in control

—

B-04

250.55 g

+0.6

zone C, within 1 sigma

in control

—

B-05

249.93 g

+0.0

zone C, within 1 sigma

in control

—

B-06

248.79 g

−1.0

zone B, 1 to 2 sigma

in control

—

B-07

250.07 g

+0.2

zone C, within 1 sigma

in control

—

B-08

249.53 g

−0.3

zone C, within 1 sigma

in control

—

B-09

249.65 g

−0.2

zone C, within 1 sigma

in control

—

B-10

250.14 g

+0.2

zone C, within 1 sigma

in control

—

B-11

248.42 g

−1.4

zone B, 1 to 2 sigma

in control

—

B-12

249.71 g

−0.2

zone C, within 1 sigma

in control

—

B-13

253.9 g

+3.8

beyond the control limit

rule 1, beyond the upper control limit

hopper jam cleared by hand

B-14

248.4 g

−1.4

zone B, 1 to 2 sigma

part of 10 points in a row below the centre line

new resin lot

B-15

249.31 g

−0.5

zone C, within 1 sigma

part of 10 points in a row below the centre line

—

B-16

248.7 g

−1.1

zone B, 1 to 2 sigma

part of 10 points in a row below the centre line

—

B-17

249.1 g

−0.7

zone C, within 1 sigma

part of 10 points in a row below the centre line

—

B-18

249.34 g

−0.5

zone C, within 1 sigma

part of 10 points in a row below the centre line

—

B-19

248.99 g

−0.8

zone C, within 1 sigma

part of 10 points in a row below the centre line; part of 10 points in a row rising

—

B-20

249.03 g

−0.8

zone C, within 1 sigma

part of 10 points in a row below the centre line; part of 10 points in a row rising

—

B-21

249.08 g

−0.7

zone C, within 1 sigma

rule 2, 10 points in a row below the centre line; part of 10 points in a row rising

—

B-22

249.4 g

−0.4

zone C, within 1 sigma

part of 10 points in a row below the centre line; part of 10 points in a row rising

—

B-23

249.7 g

−0.2

zone C, within 1 sigma

part of 10 points in a row below the centre line; part of 10 points in a row rising

—

B-24

250 g

+0.1

zone C, within 1 sigma

rule 3, 10 points in a row rising

—

B-25

250.35 g

+0.4

zone C, within 1 sigma

part of 10 points in a row rising

—

B-26

250.7 g

+0.8

zone C, within 1 sigma

part of 10 points in a row rising

—

B-27

251.05 g

+1.1

zone B, 1 to 2 sigma

part of 10 points in a row rising

—

B-28

251.4 g

+1.4

zone B, 1 to 2 sigma

part of 10 points in a row rising

—

B-29

250.6 g

+0.7

zone C, within 1 sigma

in control

—

B-30

250.2 g

+0.3

zone C, within 1 sigma

in control

—