condition mean min max 0 h after light 0.0798779 0.0531888 0.106567 4 h after light 0.0533184 0.0524413 0.0541955 8 h after light 0.0804541 0.0526222 0.108286 4 h after dark 0.0785636 0.0522382 0.104889 8 h after dark 0.158036 0.104769 0.211303 12 h after dark 0.0785192 0.0531174 0.103921