condition mean min max 4 h after light 9.943501000000001 9.918354 9.968648 8 h after light 11.663724 10.356972 12.970476 12 h after light 8.8107315 8.322505 9.298958 4 h after dark 9.536857000000001 9.15536 9.918354 8 h after dark 10.2526165 9.918354 10.586879 12 h after dark 9.265982 9.265982 9.265982