condition mean min max ZT0-3 92.45613333333333 12.8029 134.6995 ZT4-7 25.2671 25.2671 25.2671 ZT8-11 16.9463 16.9463 16.9463 ZT12-15 28.28815 18.234650000000002 38.34165 ZT16-19 63.51995 63.51995 63.51995 ZT20-23 119.2475 119.2475 119.2475