condition mean min max 4 h after light 5.34075 5.1759699999999995 5.621659999999999 8 h after light 5.595963333333334 5.44428 5.676880000000001 12 h after light 5.0766100000000005 4.99746 5.13893 4 h after dark 5.3772 5.06264 5.82744 8 h after dark 5.3998566666666665 5.08791 5.762490000000001 12 h after dark 4.950443333333333 4.87156 5.07137