& exf_inscal_sgrunoff, sgrunoffmask, sgrunoffconst,
& exf_inscal_sgrunoff,
_RL exf_inscal_sgrunoff
& , exf_inscal_sgrunoff
& sgrunoff_exfremo_slope, exf_inscal_sgrunoff
exf_inscal_sgrunoff = 1. _d 0