Gleyic Munsell hue patterns (WRB 2022, Ch 3.1.13 redoximorphic features)

Hues consistent with Fe reduction (gleyic / reductimorphic). Used by test_gleyic_features as a secondary evidence path when redoximorphic_features_pct is not reported (e.g. BDsolos perfis where the surveyor recorded Munsell colors but not mottle percent). Per WRB 2022 Ch 3.1.13: hues N (neutral), 10Y, 5GY, 10GY, 5G, 10G, 5BG, 10BG, 5B, 10B (any value, chroma <= 2 inferred).

Usage

.GLEYIC_HUE_REGEX

Format

An object of class character of length 1.