
Test for WRB 2022 Ch 3.2.17 yermic surface signature
Source:R/utils-diagnostic-tests-v033.R
test_yermic_surface.RdCoarse surface fragments (desert_pavement_pct) >= 20% AND
(varnish_pct >= 10 OR ventifact_pct >= 10 OR
vesicular_pores %in% c("common", "many")) on the surface
layer (top_cm <= 5).