condition mean min max 4 h after light 18.606999 15.546752 21.667246 8 h after light 16.957952 15.060818 18.855086 12 h after light 14.6071495 12.33323 16.881069 4 h after dark 15.537016999999999 13.35618 17.717854 8 h after dark 15.688345000000002 15.275975 16.100715 12 h after dark 35.602232 35.602232 35.602232