public:watches:cosc
Table of Contents
COSC
History
Test definitions
15 day test regime
| Day | Temp/°C | Pos | Daily rate | Variance |
|---|---|---|---|---|
| 1 | 23 | 6H | M1 | |
| 2 | 23 | M2 | V1 | |
| 3 | 23 | 3H | M3 | |
| 4 | 23 | M4 | V2 | |
| 5 | 23 | 9H | M5 | |
| 6 | 23 | M6 | V3 | |
| 7 | 23 | Dd | M7 | |
| 8 | 23 | M8 | V4 | |
| 9 | 23 | Du | M9 | |
| 10 | 23 | M10 | V5 | |
| 11 | 8 | Du | M11 | |
| 12 | 23 | Du | M12 | |
| 13 | 38 | Du | M13 | |
| 14 | 23 | 6H | M14 | |
| 15 | 23 | 6H | M15 |
| Test | ID | Description | Limit |
|---|---|---|---|
| Mean Daily Rate M(1→10) | M | average of M1 → M10 | -4/+6 |
| Mean Variation | V | average of V1 → V5 | 2 |
| Greatest Variation | Vmax | Largest of V1 → V5 | 5 |
| Difference V → H | D | Average(M1→M2) - Average(M9→M10) | -6 / +8 |
| Largest Variation from mean | P | Largest Value difference between any individual M and average of M(1→10) | 10 |
| Thermal Variation | C | (M13 - M11) / (38 - 8) | ±0.6 |
| Rate Resumption | R | M15 - Ave(M1→M2) | ±5 |
pseudo Tests with Timegrapher
Ignoring Temperature Variations.
Make 2 measurements on Timegrapher in each position, separated by 24 hours and record them in table:
| Day | Pos | Daily rate | Variance |
|---|---|---|---|
| 1 | 6H | M1 | |
| 2 | M2 | V1 | |
| 3 | 3H | M3 | |
| 4 | M4 | V2 | |
| 5 | 9H | M5 | |
| 6 | M6 | V3 | |
| 7 | Ddn | M7 | |
| 8 | M8 | V4 | |
| 9 | Dup | M9 | |
| 14 | 6H | M14 | |
| 15 | 6H | M15 |
Some results
Archimede Deck watch (a 10 day test, not a timegrapher pseudo-test)
| Day | Pos | Daily rate | Variance | ||
|---|---|---|---|---|---|
| 1 | 6H | M1 | +0.3 | ||
| 2 | M2 | +1.3 | V1 | 1.0 | |
| 3 | 3H | M3 | -0.7 | ||
| 4 | M4 | -1.7 | V2 | 1.0 | |
| 5 | 9H | M5 | +8.2 | ||
| 6 | M6 | +6.1 | V3 | 2.1 | |
| 7 | Dd | M7 | +11.0 | ||
| 8 | M8 | +10.9 | V4 | 0.1 | |
| 9 | Du | M9 | +9.9 | ||
| 10 | M10 | +9.5 | V5 | 0.4 | |
| 14 | 6H | M14 | +2.5 | ||
| 15 | 6H | M15 | +2.7 |
| Test | Desc | Result | Pass/Fail | Limit |
|---|---|---|---|---|
| M | Mean Daily Rate | +5.5 | Pass | -4 / +6 |
| V | Mean Variation | 0.9 | Pass | 2 |
| Vmax | Greatest Variation | 2.1 | Pass | 5 |
| D | Difference Vert → Horiz | -8.9 | Fail | -6 / +8 |
| P | Largest Difference from Mean | 7.2 | Pass | 10 |
| R | Rate resumption | 1.9 | Pass | -5 / +5 |
Page created Sun May 22 00:23:48 2022 by John Pumford-Green
Page last updated: 02/07/22 23:45 BST
public/watches/cosc.txt · Last modified: 02/07/22 23:45 BST by john