condition mean min max ZT0-3 174.6805 174.6805 174.6805 ZT4-7 148.1085 148.1085 148.1085 ZT8-11 133.172 133.172 133.172 ZT12-15 136.4875 136.4875 136.4875 ZT16-19 169.94400000000002 169.94400000000002 169.94400000000002 ZT20-23 164.25549999999998 164.25549999999998 164.25549999999998