condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.55961 0.0 1.67883 12 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0