condition mean min max ZT0-3 13316.650000000001 13316.650000000001 13316.650000000001 ZT4-7 11488.3 11488.3 11488.3 ZT8-11 10780.599999999999 10780.599999999999 10780.599999999999 ZT12-15 10702.8 10702.8 10702.8 ZT16-19 13411.349999999999 13411.349999999999 13411.349999999999 ZT20-23 13397.900000000001 13397.900000000001 13397.900000000001