Figure 6. Goodness-of-fit Z-statistic comparison. Grouped bar chart of |Z|-statistics by region, distribution (GEV, GLO, GPA, K3D-II), and estimation method. Dashed line at |Z| = 1.64 (90% threshold); bars above indicate failure

From

TL-Moment-Based Regional Frequency Analysis of Extreme Rainfall Using Ward's Clustering and Kappa-Type Distributions

Muhammad Nura, Zahratul Amani Binti Zakaria

American Journal of Water Resources. 2026, 14(2), 46-54 doi:10.12691/ajwr-14-2-3