condition mean min max ZT0-3 191.52249999999998 191.52249999999998 191.52249999999998 ZT4-7 147.518 147.518 147.518 ZT8-11 88.3844 88.3844 88.3844 ZT12-15 112.72200000000001 112.72200000000001 112.72200000000001 ZT16-19 140.8965 140.8965 140.8965 ZT20-23 171.539 171.539 171.539