condition mean min max ZT0-3 167.14999999999998 167.14999999999998 167.14999999999998 ZT4-7 195.4 195.4 195.4 ZT8-11 191.8 191.8 191.8 ZT12-15 179.0 179.0 179.0 ZT16-19 124.45 124.45 124.45 ZT20-23 106.75 106.75 106.75