condition mean min max ZT0-3 111.63145 111.63145 111.63145 ZT4-7 61.49395 61.49395 61.49395 ZT8-11 49.298249999999996 49.298249999999996 49.298249999999996 ZT12-15 120.5015 120.5015 120.5015 ZT16-19 204.5935 204.5935 204.5935 ZT20-23 158.9495 158.9495 158.9495