Return Period

0.5 hr

1 hr

3 hr

6 hr

12 hr

24 hr

2 yr

23.1

31.8

38.9

45.7

50.5

52.5

5 yrs

27.9

38.2

46.1

54.7

60.0

65.0

10 yrs

31.5

42.9

51.4

60.8

68.7

73.1

25 yrs

36.1

48.4

57.6

68.7

77.7

83.7

50 yrs

40.2

52.8

62.7

74.0

84.9

91.4

100 yrs

42.7

57.6

68.4

81.0

93.2

99.3