时间跨度n

5

6

7

8

10

15

20

30

40

回归方程

H

0.692

0.669

0.6439

0.6584

0.6503

0.615

0.6004

0.6055

0.5664

R²

0.9932

0.9935

0.9917

0.9927

0.9929

0.9847

0.9862

0.9872

0.9669