{ "what": "Five distribution families for significant wave height (exponential, normal, lognormal, Weibull, exponentiated Weibull) fitted by maximum likelihood to the hourly series and to the daily, monthly and annual maxima of NDBC buoys A, B and C of the environmental-contour benchmark (corpus/ec-benchmark, provided and retained years together); every fit certified by the Krawczyk operator as the unique zero of the score in a box; the Anderson–Darling statistic and the 10-, 50- and 100-year return levels enclosed over the box; the family the statistic prefers DECIDED where the enclosures separate and REFUSED where they overlap. The method of Reis, Guimarães, Farina, Paul, de Paula, Ribeiro (Ocean Eng. 359, 2026, 125841) on public data with each step certified; the generalized gamma of their six is not fitted (no certified digamma yet).", "generated": "2026-09-17", "conventions": { "hoursPerYear": 8766, "returnLevel": "F⁻¹(1 − b/(T·8766)) for a block of b hours; null when fewer than one block falls in the return period", "ad": "A² = −n − (1/n) Σ (2i−1)[ln F(x_(i)) + ln(1 − F(x_(n+1−i)))] on the sorted data, each F an enclosure over the parameter box", "verdict": "DECIDED when the smallest A² enclosure lies wholly below every other; REFUSED otherwise, naming the overlapping families", "certificate": "Krawczyk (instruments/interval/radii.js) on the score equations over the interval data; the box is the certificate; a family with no finite maximum, or whose box does not contract, is REFUSED and says why", "data": "each hourly literal enclosed by its neighbouring doubles; a block maximum is the largest literal in 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