condition mean min max ZT0-3 100.21426429499999 91.12314854 109.30538005 ZT4-7 128.49503514999998 123.19868184999999 133.79138845 ZT8-11 205.264840425 170.53731439999999 239.99236645000002 ZT12-15 326.436766475 315.99565345 336.8778795 ZT16-19 325.26616005000005 296.14839345 354.38392665000003 ZT20-23 248.66102224999997 247.0575825 250.26446199999998