condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 4 h after dark 0.1626845 0.0 0.325369 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0