t1

t2

dt

Δ

新t1

310.0

67.0

−243.0

−150.2

159.8

159.8

126.0

−33.8

−20.9

138.9

138.9

142.0

3.1

1.9

140.8

140.8

140.8

0.0

0.0

140.8

140.8