condition mean min max ZT0-3 99.790875 98.31665 101.26509999999999 ZT4-7 68.90145000000001 68.90145000000001 68.90145000000001 ZT8-11 86.5769 86.5769 86.5769 ZT12-15 0 0 0 ZT16-19 110.03399999999999 110.03399999999999 110.03399999999999 ZT20-23 161.359 161.359 161.359