condition mean min max 4 h after light 7.4771435 6.895329 8.058958 8 h after light 7.2313125 7.210433 7.252192 12 h after light 7.58329 6.664795 8.501785 4 h after dark 7.7273835 7.218097 8.23667 8 h after dark 7.5509474999999995 7.321061 7.780834 12 h after dark 7.252192 7.252192 7.252192