condition mean min max 0 h after light 17.3721 16.5171 18.2271 4 h after light 15.4674 14.631 16.3038 8 h after light 11.181405000000002 9.85161 12.5112 4 h after dark 16.634149999999998 16.286 16.9823 8 h after dark 26.87205 25.0364 28.7077 12 h after dark 15.92165 15.0774 16.7659