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 0.077208 0.0 0.154416 8 h after dark 0.0190698 0.0 0.0381396 12 h after dark 0.0 0.0 0.0