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 0.0101185 0.0 0.020237 4 h after dark 0.0 0.0 0.0 8 h after dark 0.011296733333333335 0.0 0.0338902 12 h after dark 0.0 0.0 0.0