condition mean min max ZT0-3 135.35000000000002 135.35000000000002 135.35000000000002 ZT4-7 93.9 93.9 93.9 ZT8-11 119.25 119.25 119.25 ZT12-15 91.6 91.6 91.6 ZT16-19 108.1 108.1 108.1 ZT20-23 125.55 125.55 125.55