condition mean min max ZT0-3 98.626 57.3 134.945 ZT4-7 33.389450000000004 33.389450000000004 33.389450000000004 ZT8-11 26.9426 26.9426 26.9426 ZT12-15 79.04047499999999 61.10785 96.97309999999999 ZT16-19 97.78094999999999 97.78094999999999 97.78094999999999 ZT20-23 155.8065 155.8065 155.8065