condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 1.537855 1.12977 1.94594 8 h after light 1.2527139999999999 0.755778 1.74965 4 h after dark 0.2817195 0.188307 0.375132 8 h after dark 0.0940455 0.0 0.188091 12 h after dark 0.2819295 0.190723 0.373136