condition mean min max ZT0-3 162.25 162.25 162.25 ZT4-7 191.0 191.0 191.0 ZT8-11 169.7 169.7 169.7 ZT12-15 175.05 175.05 175.05 ZT16-19 170.0 170.0 170.0 ZT20-23 193.45 193.45 193.45