condition mean min max ZT0-3 79.5 79.5 79.5 ZT4-7 103.6 103.6 103.6 ZT8-11 86.4 86.4 86.4 ZT12-15 87.44999999999999 87.44999999999999 87.44999999999999 ZT16-19 70.45 70.45 70.45 ZT20-23 88.9 88.9 88.9