condition mean min max ZT0-3 14.3975732965 6.897676307999999 21.897470285 ZT4-7 35.001989587500006 34.35891206 35.645067115 ZT8-11 53.070793697499994 40.51239478 65.629192615 ZT12-15 103.2704863475 99.67374264 106.867230055 ZT16-19 118.59032 117.65399245 119.52664755 ZT20-23 88.21808720749999 85.827390545 90.60878387