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 0.04402905 0.0435918 0.0444663 4 h after dark 0.03932 0.0 0.11796 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0