condition mean min max ZT0-3 230.25 230.25 230.25 ZT4-7 148.5 148.5 148.5 ZT8-11 98.15 98.15 98.15 ZT12-15 120.65 120.65 120.65 ZT16-19 241.05 241.05 241.05 ZT20-23 225.45 225.45 225.45