TABLE I.

Error bars for the frequency stabilities in Fig. 4. The unit for numbers in this table is 10⁻¹⁶. The 68.3% confidence level is used in this table to be consistent with the convention.

	AT1-UTC	ATl′-UTC	UTC(NIST) -UTC	UTC(PTB) -UTC	UTC(USNO) -UTC
5 days	(4.82, 6.16)	(4.62, 5.91)	(8.90, 11.96)	(4.14, 5.57)	(4.97, 6.56)
10 days	(3.32, 4.96)	(3.16, 4.51)	(9.41, 13.44)	(3.59, 5.36)	(3.99, 5.96)
15 days	(2.40, 3.98)	(2.32, 3.64)	(8.89, 13.94)	(2.70, 4.24)	(3.50, 5.79)
20 days	(1.94, 3.53)	(1.87, 3.19)	(7.08, 12.10)	(2.11, 3.61)	(3.49, 6.32)
25 days	(1.78, 3.64)	(1.34, 2.43)	(4.76, 8.65)	(1.95, 4.00)	(3.42, 6.35)
30 days	(1.95, 4.38)	(1.15, 2.26)	(3.46, 6.81)	(1.93, 4.35)	(2.97, 6.01)
35 days	(2.20, 5.36)	(1.05, 2.25)	(2.48, 5.30)	(2.00, 4.88)	(2.43, 5.35)
40 days	(2.46, 6.53)	(1.00, 2.33)	(1.86, 4.34)	(2.16, 5.75)	(1.94, 4.69)
45 days	(2.64, 7.62)	(0.88, 2.24)	(1.63, 4.16)	(2.37, 6.84)	(1.53, 4.07)
50 days	(2.67, 8.49)	(0.66, 1.85)	(1.29, 3.67)	(2.48, 7.86)	(1.51, 4.45)