M | N1(M) | Probability of exceedance (% ) for t years | TR (Years) | Theoretical Return Period | |||||
t = 1 | t = 5 | t = 10 | t = 20 | t = 50 | t = 100 | ||||
4.0 | 39.69 | 100 | 100 | 100 | 100 | 100 | 100 | 0.0252 | 1 |
4.5 | 14.31 | 100 | 100 | 100 | 100 | 100 | 100 | 0.0699 | 1 |
5.0 | 5.16 | 99 | 100 | 100 | 100 | 100 | 100 | 0.1938 | 1.01 |
5.5 | 1.86 | 84 | 100 | 100 | 100 | 100 | 100 | 0.5373 | 1.18 |
6.0 | 0.67 | 49 | 97 | 100 | 100 | 100 | 100 | 1.4901 | 2.05 |
6.5 | 0.24 | 21 | 70 | 91 | 99 | 100 | 100 | 4.1325 | 4.65 |
7.0 | 0.09 | 8 | 35 | 58 | 83 | 99 | 100 | 11.460 | 11.97 |
7.5 | 0.03 | 3 | 15 | 27 | 47 | 79 | 96 | 31.78 | 32.28 |
7.6 | 0.03 | 3 | 12 | 23 | 40 | 72 | 92 | 38.97 | 39.48 |