condition mean min max ZT0-3 104.88955 99.7816 109.9975 ZT4-7 42.359049999999996 42.359049999999996 42.359049999999996 ZT8-11 38.6764 38.6764 38.6764 ZT12-15 0 0 0 ZT16-19 86.69305 86.69305 86.69305 ZT20-23 96.73705000000001 96.73705000000001 96.73705000000001