condition mean min max ZT0-3 33.25 33.25 33.25 ZT4-7 754.8 754.8 754.8 ZT8-11 588.95 588.95 588.95 ZT12-15 336.6 336.6 336.6 ZT16-19 72.25 72.25 72.25 ZT20-23 77.65 77.65 77.65