condition mean min max ZT0-3 86.21000000000001 86.21000000000001 86.21000000000001 ZT4-7 67.77 67.77 67.77 ZT8-11 97.75222222333333 97.75222222333333 97.75222222333333 ZT12-15 93.97222223333333 93.97222223333333 93.97222223333333 ZT16-19 119.55888889 119.55888889 119.55888889 ZT20-23 96.74222222333334 96.74222222333334 96.74222222333334