Reporting Selection Portfolio
Expert Suggestion
Generalized Log-Logistic (Product-Moments)
Adopted
Generalized Log-Logistic (Product-Moments)
#1Hydrologic Benchmark Check
Selected 100-Yr Event
328.992mm
Conservative Benchmark
310.142mm (TCEV)
Benchmark Delta:+18.851 mm (+6.1%)
⚠ Sensitivity Gap
Input Profile & Distribution Analysis
36 Sample YearsCV: 0.34
Station Peak:309.6 mm
Report Branding
Time Series Data
36 valid points
Statistics
| n (sample size) | 36 |
| Mean (x̄) | 148.497 |
| Std Deviation (σ) | 50.379 |
| Coefficient of Variation | 0.339 |
| Skewness (γ₁) | 0.935 |
| Excess Kurtosis (γ₂) | 1.187 |
| Minimum | 72.930 |
| Median | 141.200 |
| Maximum | 309.610 |
Input Data Profiler
Samples
Mean (x̄)
Median (m)
Std Dev (±σ)
Frequency Curve
Goodness of Fit(Click row to select)
Frequency Table
| Return Period | Prob (%) | Rainfall (mm) | Lower 95% | Upper 95% |
|---|---|---|---|---|
| 500.00 | 0.2% | 443.68 | 399.27 | 488.10 |
| 200.00 | 0.5% | 374.33 | 336.46 | 412.20 |
| 100.00 | 1.0% | 328.99 | 296.08 | 361.91 |
| 50.00 | 2.0% | 288.87 | 260.91 | 316.83 |
| 20.00 | 5.0% | 242.46 | 221.04 | 263.87 |
| 10.00 | 10.0% | 211.17 | 194.71 | 227.63 |
| 5.00 | 20.0% | 181.76 | 170.26 | 193.27 |
| 2.00 | 50.0% | 140.66 | 135.71 | 145.62 |
| 1.25 | 80.0% | 108.86 | 107.26 | 110.45 |
| 1.11 | 90.0% | 93.70 | 92.95 | 94.45 |
| 1.05 | 95.0% | 81.61 | 81.24 | 81.98 |
| 1.01 | 99.0% | 60.14 | 60.07 | 60.21 |
Model Comparison
Detailed Comparison Matrix
| Return Period | Log-Logistic (PM) (Active) | Gamma (PM) | TCEV (MLE) | Gumbel (PM) | Log-Normal (PM) | GEV (LM) | GEV (PM) | Log-Pearson III (PM) | Normal (PM) | Pearson III (PM) | Exponential (PM) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 500.00 yr | 443.68 | 335.08 | 374.85 | 369.90 | 369.32 | 356.80 | 354.59 | 358.84 | 293.50 | 350.56 | 411.20 |
| 200.00 yr | 374.33 | 309.88 | 338.05 | 333.85 | 333.70 | 325.90 | 324.05 | 326.34 | 278.27 | 321.39 | 365.04 |
| 100.00 yr | 328.99 | 290.01 | 310.14 | 306.52 | 306.92 | 301.78 | 300.21 | 301.59 | 265.70 | 298.64 | 330.12 |
| 50.00 yr | 288.87 | 269.24 | 282.13 | 279.09 | 280.10 | 276.95 | 275.66 | 276.54 | 251.96 | 275.13 | 295.20 |
| 20.00 yr | 242.46 | 239.89 | 244.76 | 242.49 | 244.21 | 242.82 | 241.90 | 242.54 | 231.36 | 242.46 | 249.04 |
| 10.00 yr | 211.17 | 215.61 | 215.89 | 214.22 | 216.20 | 215.65 | 215.01 | 215.63 | 213.06 | 215.98 | 214.12 |
| 5.00 yr | 181.76 | 188.40 | 185.80 | 184.74 | 186.54 | 186.56 | 186.21 | 186.74 | 190.90 | 187.04 | 179.20 |
| 2.00 yr | 140.66 | 142.84 | 140.34 | 140.22 | 140.66 | 141.10 | 141.18 | 141.22 | 148.50 | 140.76 | 133.04 |
| 1.25 yr | 108.86 | 105.32 | 106.56 | 107.13 | 106.07 | 106.07 | 106.47 | 106.20 | 106.10 | 105.50 | 109.36 |
| 1.11 yr | 93.70 | 88.69 | 92.20 | 93.06 | 91.52 | 90.86 | 91.39 | 91.30 | 83.93 | 91.04 | 103.43 |
| 1.05 yr | 81.61 | 76.41 | 81.65 | 82.73 | 81.02 | 79.55 | 80.17 | 80.48 | 65.63 | 80.97 | 100.70 |
| 1.01 yr | 60.14 | 56.70 | 64.41 | 65.84 | 64.47 | 60.84 | 61.62 | 63.35 | 31.30 | 66.13 | 98.62 |