t1

t2

dt

Δ

新t1

310.0

104.0

−206.0

−127.3

182.7

182.7

191.5

8.8

5.4

188.1

188.1

185.3

−2.8

−1.8

186.4

186.4

187.2

0.8

0.5

186.9

186.9

186.6

−0.3

−0.2

186.7

186.7