condition mean min max ZT0-3 67.15 67.15 67.15 ZT4-7 160.0 160.0 160.0 ZT8-11 177.7 177.7 177.7 ZT12-15 172.75 172.75 172.75 ZT16-19 88.9 88.9 88.9 ZT20-23 53.8 53.8 53.8