condition mean min max ZT0-3 434.65 434.65 434.65 ZT4-7 547.7 547.7 547.7 ZT8-11 488.6 488.6 488.6 ZT12-15 415.70000000000005 415.70000000000005 415.70000000000005 ZT16-19 466.95 466.95 466.95 ZT20-23 427.4 427.4 427.4