condition mean min max ZT0-3 153.5 153.5 153.5 ZT4-7 179.8 179.8 179.8 ZT8-11 186.7 186.7 186.7 ZT12-15 217.65 217.65 217.65 ZT16-19 152.8 152.8 152.8 ZT20-23 176.8 176.8 176.8