condition mean min max 4 h after light 15.653749999999999 15.5503 15.7572 8 h after light 8.81275 8.53905 9.08645 12 h after light 7.42598 7.29825 7.55371 4 h after dark 10.38375 10.212 10.5555 8 h after dark 13.459 13.1119 13.8061 12 h after dark 14.8375 14.1525 15.5225