condition mean min max 4 h after light 1.6711300000000002 1.18002 2.16224 8 h after light 2.575375 2.45258 2.69817 12 h after light 2.52481 2.35351 2.69611 4 h after dark 2.6831 2.56109 2.80511 8 h after dark 1.77191 1.59315 1.95067 12 h after dark 2.1800699999999997 2.02976 2.33038