condition mean min max ZT0-3 112.6 112.6 112.6 ZT4-7 203.5 203.5 203.5 ZT8-11 164.55 164.55 164.55 ZT12-15 126.1 126.1 126.1 ZT16-19 175.6 175.6 175.6 ZT20-23 169.1 169.1 169.1