condition mean min max ZT0-3 105.23221046 104.47498722 105.9894337 ZT4-7 118.90511695000001 115.50637286666667 122.30386103333333 ZT8-11 125.749651 124.4237284 127.07557360000001 ZT12-15 113.78830980000001 108.2124468 119.3641728 ZT16-19 115.06890946666667 108.22383903333333 121.9139799 ZT20-23 133.02805953333333 128.0672535 137.98886556666668