condition mean min max 0 h after light 3.2348749999999997 3.09354 3.37621 2 h after light 3.5420599999999998 3.05577 4.02835 4 h after light 6.1747 4.90267 7.44673 8 h after light 6.0964100000000006 5.86695 6.32587 12 h after light 17.482 16.3883 18.5757 2 h after dark 17.190649999999998 16.3183 18.063 4 h after dark 11.7487 11.3915 12.1059 8 h after dark 8.097585 7.00518 9.18999 12 h after dark 4.299065000000001 4.06135 4.53678