condition mean min max ZT0-3 27.175206666666664 10.55537 57.0408 ZT4-7 102.9865 102.9865 102.9865 ZT8-11 16.9701 16.9701 16.9701 ZT12-15 24.556575 15.367449999999998 33.7457 ZT16-19 10.62065 10.62065 10.62065 ZT20-23 18.95535 18.95535 18.95535