condition mean min max 3 h after light 15.7741 13.9984 17.8319 6 h after light 13.182033333333333 12.2647 14.0066 9 h after light 14.705333333333334 13.5191 16.1346 12 h after light 17.6414 13.7755 19.9778 3 h after dark 26.522633333333335 24.692 29.6735 6 h after dark 25.370633333333334 24.2651 27.5635 9 h after dark 21.7875 19.4158 23.9997 12 h after dark 20.697499999999998 20.588 20.807