condition mean min max ZT0-3 103.67369957 91.94425269 115.40314645000001 ZT4-7 53.024163385 35.27679415 70.77153262 ZT8-11 36.146166179999994 36.00974210333333 36.282590256666666 ZT12-15 26.719279864999997 21.537135456666665 31.901424273333333 ZT16-19 28.585013840000002 26.287529403333334 30.882498276666666 ZT20-23 31.853249495 29.57853712 34.12796187