condition mean min max ZT0-3 122.55000000000001 122.55000000000001 122.55000000000001 ZT4-7 71.2 71.2 71.2 ZT8-11 97.4 97.4 97.4 ZT12-15 86.44999999999999 86.44999999999999 86.44999999999999 ZT16-19 99.7 99.7 99.7 ZT20-23 116.4 116.4 116.4