condition mean min max ZT0-3 98.4 98.4 98.4 ZT4-7 149.0 149.0 149.0 ZT8-11 161.15 161.15 161.15 ZT12-15 172.25 172.25 172.25 ZT16-19 140.5 140.5 140.5 ZT20-23 96.5 96.5 96.5