condition mean min max ZT0-3 147.444696 147.444696 147.444696 ZT4-7 120.70943399999999 120.70943399999999 120.70943399999999 ZT8-11 87.453493 87.453493 87.453493 ZT12-15 57.140838 57.140838 57.140838 ZT16-19 120.9299105 120.9299105 120.9299105 ZT20-23 128.4146435 128.4146435 128.4146435