condition mean min max 4 h after light 3.4616249999999997 3.43385 3.4894 8 h after light 4.355885 2.80008 5.91169 12 h after light 4.92279 4.25049 5.59509 4 h after dark 12.613996666666667 9.60689 15.8747 8 h after dark 12.993433333333334 10.3397 16.1054 12 h after dark 9.77337 8.49508 11.9297