condition mean min max 0 h after light 9.726510000000001 9.69148 9.76154 4 h after light 11.27745 10.8016 11.7533 8 h after light 23.11965 22.894 23.3453 4 h after dark 20.21515 19.8125 20.6178 8 h after dark 15.4697 15.0658 15.8736 12 h after dark 11.711279999999999 9.94146 13.4811