wave exposure wave_exposure protected (< 2m) protected (< 2m) exposure 0.0 exposure 2 circle #1a9641 10 moderately exposed (2.0 - 4.0) moderately exposed (2.0 - 4.0) exposure 2 exposure 4 circle #fdbf6f 10 exposed (4.0 >m) exposed (4.0 >m) exposure 4 exposure 13.8105 circle #d7191c 10