condition mean min max ZT0-3 504.4 504.4 504.4 ZT4-7 313.4 313.4 313.4 ZT8-11 307.75 307.75 307.75 ZT12-15 415.95 415.95 415.95 ZT16-19 449.9 449.9 449.9 ZT20-23 480.15 480.15 480.15