condition mean min max ZT0-3 462.057231 462.057231 462.057231 ZT4-7 676.6507065000001 676.6507065000001 676.6507065000001 ZT8-11 711.595568 711.595568 711.595568 ZT12-15 533.205502 533.205502 533.205502 ZT16-19 653.3596515 653.3596515 653.3596515 ZT20-23 545.783433 545.783433 545.783433