condition mean min max ZT0-3 174.6 174.6 174.6 ZT4-7 101.8 101.8 101.8 ZT8-11 136.39999999999998 136.39999999999998 136.39999999999998 ZT12-15 124.5 124.5 124.5 ZT16-19 137.9 137.9 137.9 ZT20-23 162.2 162.2 162.2