condition mean min max 0 h after light 0.0 0.0 0.0 2 h after light 0.0 0.0 0.0 4 h after light 0.0 0.0 0.0 8 h after light 0.211783 0.0 0.423566 12 h after light 0.0 0.0 0.0 2 h after dark 0.0 0.0 0.0 4 h after dark 0.204554 0.0 0.409108 8 h after dark 0.2224355 0.0 0.444871 12 h after dark 0.0 0.0 0.0