condition mean min max 4 h after light 0.227942 0.0 0.455884 8 h after light 0.1846785 0.0 0.369357 12 h after light 0.2991825 0.0 0.598365 4 h after dark 0.197142 0.0 0.394284 8 h after dark 0.195847 0.0 0.391694 12 h after dark 0.194524 0.0 0.389048