condition mean min max 4 h after light 7.9662805 7.931392 8.001169 8 h after light 8.0795465 8.028447 8.130646 12 h after light 8.3182705 7.605821 9.03072 4 h after dark 7.749562 7.368478 8.130646 8 h after dark 11.246860999999999 10.735899 11.757823 12 h after dark 7.203401 7.203401 7.203401