condition mean min max ZT0-3 122.25 122.25 122.25 ZT4-7 87.5 87.5 87.5 ZT8-11 116.35 116.35 116.35 ZT12-15 99.9 99.9 99.9 ZT16-19 81.44999999999999 81.44999999999999 81.44999999999999 ZT20-23 112.85 112.85 112.85