condition mean min max 3 h after light 3.68014 2.52909 4.92731 6 h after light 4.49469 3.64091 5.57922 9 h after light 3.78848 2.87519 4.72489 12 h after light 6.75322 3.2488 11.4047 3 h after dark 4.999723333333334 3.45923 6.79311 6 h after dark 7.85868 7.09389 8.87828 9 h after dark 6.08552 5.13693 7.21809 12 h after dark 8.76087 4.36634 13.1554