condition mean min max 0 h after light 6.839675 6.76597 6.91338 2 h after light 9.774915 9.7649 9.78493 4 h after light 8.84467 6.96944 10.7199 8 h after light 9.869235 9.35607 10.3824 12 h after light 14.3172 11.748 16.8864 2 h after dark 15.037 14.2855 15.7885 4 h after dark 10.172905 9.47891 10.8669 8 h after dark 9.388770000000001 6.83624 11.9413 12 h after dark 8.461395 8.44643 8.47636