condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 4 h after dark 0.011071 0.0 0.033213 8 h after dark 0.0 0.0 0.0 12 h after dark 0.2313935 0.0 0.637235