condition mean min max ZT0-3 194.75 194.75 194.75 ZT4-7 180.7 180.7 180.7 ZT8-11 137.7 137.7 137.7 ZT12-15 108.15 108.15 108.15 ZT16-19 179.25 179.25 179.25 ZT20-23 169.60000000000002 169.60000000000002 169.60000000000002