As indicated in Figure 22, the stability (ADEV) was slightly better than
1 × 10-7 after one week, or about 80 times better than the accuracy. Stopwatch
B had an average frequency offset (accuracy) during the test of about 5 × 10-7.
Its stability as estimated with ADEV was near 7 × 10-8 after one week, or about
seven times better than its accuracy.