condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.107851 0.0 0.215702 8 h after light 0.108223 0.0 0.216446 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0