Principio Titanium - wonderful accuracy

Back in January 2001, 1 month after receiving my Principio Titanium, I posted a graph on the WatchZone.net Limes forum of its performance over that month. The rate was always positive and between +3 and +6 sec/day. The average rate was +4 sec/day and I was fairly happy with that.

People spoke of "running in" and I was curious as to what would happen, so for the past month I've again been measuring the performance. The rate is now mostly negative, but is significantly better than before: it varies between +0.5 and -2 sec/day. The average is now -0.7 sec/day. I am very pleased!

The UK (Rugby) atomic radio control reference was used for these tests and the watch is worn constantly (except whilst in the shower!).

The actual data for the graphs is below:

Date Cumulative Day change Average Rate
07-Jan 0.0
08-Jan 6.2 6.2 6.20
09-Jan 10.0 3.8 5.00
10-Jan 13.0 3.0 4.33
11-Jan 16.0 3.0 4.00
12-Jan 19.0 3.0 3.80
13-Jan 23.0 4.0 3.83
14-Jan 27.0 4.0 3.86
15-Jan 30.0 3.0 3.75
16-Jan 34.0 4.0 3.78
17-Jan 37.0 3.0 3.70
18-Jan 40.5 3.5 3.68
19-Jan 44.0 3.5 3.67
20-Jan 50.1 6.1 3.85
21-Jan 56.3 6.2 4.02
22-Jan 62.5 6.2 4.17
23-Jan 69.0 6.5 4.31
24-Jan 74.0 5.0 4.35
25-Jan 78.3 4.3 4.35
26-Jan 82.5 4.3 4.34
27-Jan 87.9 5.4 4.39
28-Jan 93.3 5.4 4.44
29-Jan 98.6 5.4 4.48
30-Jan 104.0 5.4 4.52
31-Jan 108.7 4.7 4.53
01-Feb 113.4 4.7 4.54
02-Feb 117.5 4.1 4.52
03-Feb 121.8 4.3 4.51
04-Feb 126.0 4.3 4.50
05-Feb 130.3 4.3 4.49
06-Feb 134.5 4.3 4.48
07-Feb 138.0 3.5 4.45
08-Feb 142.0 4.0 4.44

Recent test:

Date Cumulative Day change Average Rate
24-Sep 7.0
25-Sep 5.0 -2.0 -2.00
26-Sep 4.0 -1.0 -1.50
27-Sep 3.0 -1.0 -1.33
28-Sep 1.0 -2.0 -1.50
29-Sep -0.3 -1.3 -1.46
30-Sep -1.0 -0.7 -1.33
01-Oct -1.5 -0.5 -1.21
02-Oct -3.0 -1.5 -1.25
03-Oct -5.0 -2.0 -1.33
04-Oct -7.0 -2.0 -1.40
05-Oct -8.0 -1.0 -1.36
06-Oct -7.7 0.3 -1.22
07-Oct -7.3 0.3 -1.10
08-Oct -7.0 0.3 -1.00
09-Oct -7.0 0.0 -0.93
10-Oct -6.5 0.5 -0.84
11-Oct -7.0 -0.5 -0.82
12-Oct -7.0 0.0 -0.78
13-Oct -7.2 -0.2 -0.75
14-Oct -7.4 -0.2 -0.72
15-Oct -7.5 -0.1 -0.69
16-Oct -9.0 -1.5 -0.73
17-Oct -10.0 -1.0 -0.74
18-Oct -10.5 -0.5 -0.73
19-Oct -11.5 -1.0 -0.74
20-Oct -12.0 -0.5 -0.73
21-Oct -11.8 0.3 -0.69
22-Oct -12.0 -0.3 -0.68
23-Oct -12.5 -0.5 -0.67
24-Oct -14.0 -1.5 -0.70

Paste these into Excel or whatever to plot the graphs.