condition mean min max 3 h after light 20.5825 19.5589 21.1386 6 h after light 20.819333333333333 15.0314 26.3072 9 h after light 26.1101 22.6134 29.2967 12 h after light 30.7292 22.5035 36.3072 3 h after dark 30.0554 27.151 35.0295 6 h after dark 38.88713333333333 35.2031 45.8273 9 h after dark 36.2933 23.1733 49.5591 12 h after dark 32.77485 24.3641 41.1856