Return period (years)

10

20

50

100

500

Return level (s)

44.83

43.96

43.44

43.24

43.03

Standard error

0.368

0.270

0.169

0.122

0.0965

95% CI

(44.11, 45.55)

(43.43, 44.49)

(43.11, 43.77)

(43.00, 43.48)

(43.86, 43.24)