condition mean min max ZT0-3 308.75 308.75 308.75 ZT4-7 255.6 255.6 255.6 ZT8-11 233.25 233.25 233.25 ZT12-15 198.8 198.8 198.8 ZT16-19 216.25 216.25 216.25 ZT20-23 258.05 258.05 258.05