Based on trace file: ALFW1_QINE.ESPF10.csv
PeakFlow (CFS), Probability of Exceedance (%) 
103508, 2
97102, 5
96630, 7
91786, 9
90959, 11
90665, 14
81511, 16
79900, 18
77652, 20
77336, 23
76122, 25
74554, 27
73569, 30
72752, 32
71289, 34
67002, 36
64918, 39
61694, 41
60575, 43
60523, 45
60168, 48
58938, 50
58004, 52
54150, 55
52290, 57
52271, 59
52172, 61
51746, 64
49807, 66
48089, 68
48072, 70
46402, 73
45213, 75
43565, 77
41149, 80
40918, 82
39773, 84
39751, 86
39475, 89
38277, 91
35000, 93
35000, 95
35000, 98