condition mean min max ZT0-3 26.536299999999997 26.536299999999997 26.536299999999997 ZT4-7 17.11555 17.11555 17.11555 ZT8-11 20.3265 20.3265 20.3265 ZT12-15 20.23925 20.23925 20.23925 ZT16-19 36.45155 36.45155 36.45155 ZT20-23 31.81135 31.81135 31.81135