Based on trace file: PRDW1_QINE.ESPF10.csv
PeakFlow (CFS), Probability of Exceedance (%) 
270173, 2
250602, 5
247141, 7
245059, 9
240349, 11
234150, 14
231384, 16
221102, 18
219607, 20
216987, 23
213022, 25
212110, 27
211987, 30
209041, 32
204236, 34
201079, 36
200535, 39
199601, 41
196995, 43
195857, 45
194436, 48
192868, 50
190587, 52
189791, 55
187096, 57
186796, 59
186778, 61
185405, 64
185282, 66
182724, 68
180908, 70
180703, 73
180680, 75
179991, 77
179232, 80
178859, 82
178476, 84
173315, 86
168428, 89
167714, 91
166405, 93
164134, 95
154582, 98