condition mean min max ZT0-3 79.7 79.7 79.7 ZT4-7 92.5 92.5 92.5 ZT8-11 142.4 142.4 142.4 ZT12-15 117.3 117.3 117.3 ZT16-19 208.75 208.75 208.75 ZT20-23 143.9 143.9 143.9