condition mean min max 4 h after light 63.914704 56.514317 71.315091 8 h after light 92.381081 43.666635 141.095527 12 h after light 29.716482 17.518285 41.914679 4 h after dark 18.9619895 15.75123 22.172749 8 h after dark 18.3421265 13.207908 23.476345 12 h after dark 20.710915 20.710915 20.710915