condition mean min max ZT0-3 196.2 196.2 196.2 ZT4-7 163.0 163.0 163.0 ZT8-11 147.35 147.35 147.35 ZT12-15 152.75 152.75 152.75 ZT16-19 147.85000000000002 147.85000000000002 147.85000000000002 ZT20-23 172.65 172.65 172.65