condition mean min max ZT0-3 213.05 213.05 213.05 ZT4-7 87.6 87.6 87.6 ZT8-11 134.4 134.4 134.4 ZT12-15 117.05 117.05 117.05 ZT16-19 196.75 196.75 196.75 ZT20-23 302.6 302.6 302.6