condition mean min max ZT0-3 81.35 81.35 81.35 ZT4-7 107.4 107.4 107.4 ZT8-11 98.44999999999999 98.44999999999999 98.44999999999999 ZT12-15 76.4 76.4 76.4 ZT16-19 72.7 72.7 72.7 ZT20-23 64.9 64.9 64.9