Casio SP-400G
Timing Data
This watch was the tightest-spec'd of the Module 75 series, but is currently performing far outside its 10 SPY factory spec., at about 45 SPY.
Day | Deviation | SPY | Correction |
0 | -0.096 | 0 | |
20 | 3.046 | 57.3 | |
61 | 8.346 | 50.5 | |
88 | 10.962 | 45.8 | |
96 | 11.682 | 44.7 | |
105 | 12.4 | 43.4 | |
111 | 12.854 | 42.5 | |
117 | 13.254 | 41.6 | |
124 | 13.59 | 40.2 | |
130 | 13.828 | 39 | |
137 | 14.73 | 39.4 |
Graph showing trends in deviation from Standard Time (in seconds) and rate (in seconds per year)
A Note on the Accuracy and Reliability of Timing Results
There is always going to be an unknown margin of error in any method of timing, and I estimate that each timing event could be off by as much as 0.1 second (though in practice I believe my results to be somewhat better than this). As a consequence of this potential margin of error, results over short periods of time are unreliable. Ultimately, the only result that matters is that which comes at the end of a full 365 days. Where interim results show consistent timings or steady trends, however, then it is safe to assume that those results are fairly accurate.