condition mean min max 0 h after light 0.726837 0.703256 0.750418 4 h after light 1.45516 1.43058 1.47974 8 h after light 3.68733 3.35121 4.02345 4 h after dark 3.8101 3.15062 4.46958 8 h after dark 2.1664399999999997 2.11568 2.2172 12 h after dark 0.9995339999999999 0.580188 1.41888