condition mean min max 4 h after light 11.628605 7.96761 15.2896 8 h after light 10.31806 9.53582 11.1003 12 h after light 16.67375 12.9938 20.3537 4 h after dark 9.95176 8.10682 11.7967 8 h after dark 12.7766 10.7741 14.7791 12 h after dark 14.066749999999999 12.4848 15.6487