condition mean min max 0 h after light 8.29102 7.58597 8.99607 2 h after light 8.59046 8.50183 8.67909 4 h after light 6.529235 5.97921 7.07926 8 h after light 7.24102 7.12866 7.35338 12 h after light 10.43457 9.53024 11.3389 2 h after dark 7.7111 7.40643 8.01577 4 h after dark 8.701015 7.71847 9.68356 8 h after dark 10.4582 10.1165 10.7999 12 h after dark 7.54592 6.20032 8.89152