Test for applicability of detection limits checks
util_app_mar(x, dta)
factor 0-3 for each variable in metadata
0 data type mismatch and not applicable
1 data type mismatches but applicable
2 data type matches but not applicable
3 data type matches and applicable
4 not applicable because of not suitable data type
data.frame metadata
logical vector, 1 = matching data type, 0 = non-matching data type
pro_applicability_matrix