condition mean min max ZT0-3 182.55 182.55 182.55 ZT4-7 179.3 179.3 179.3 ZT8-11 191.2 191.2 191.2 ZT12-15 146.15 146.15 146.15 ZT16-19 243.4 243.4 243.4 ZT20-23 248.45 248.45 248.45