condition mean min max 0 h after light 10.988 10.6193 11.3567 2 h after light 6.508335 5.87897 7.1377 4 h after light 4.38701 4.11722 4.6568 8 h after light 5.218045 3.67968 6.75641 12 h after light 6.698455 5.26258 8.13433 2 h after dark 10.25057 8.99304 11.5081 4 h after dark 10.64465 10.1393 11.15 8 h after dark 15.67875 14.777 16.5805 12 h after dark 12.203 11.783 12.623