condition mean min max ZT0-3 91.48621066749999 80.44067153499999 102.5317498 ZT4-7 17.4362416315 12.213358979499999 22.6591242835 ZT8-11 16.5222188925 11.55014491 21.494292875 ZT12-15 23.326680142500003 21.499703445 25.15365684 ZT16-19 30.2343162725 25.619105405 34.84952714 ZT20-23 50.04282859 48.88148136 51.20417582