condition mean min max ZT0-3 137.89999999999998 137.89999999999998 137.89999999999998 ZT4-7 188.5 188.5 188.5 ZT8-11 226.25 226.25 226.25 ZT12-15 227.0 227.0 227.0 ZT16-19 200.95 200.95 200.95 ZT20-23 186.64999999999998 186.64999999999998 186.64999999999998