condition mean min max 4 h after light 0.03994255 0.0 0.0798851 8 h after light 0.0 0.0 0.0 12 h after light 0.03983205 0.0 0.0796641 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0348937 0.0 0.0697874 12 h after dark 0.0867695 0.0 0.173539