condition mean min max ZT0-3 513.65 513.65 513.65 ZT4-7 566.4 566.4 566.4 ZT8-11 564.05 564.05 564.05 ZT12-15 533.55 533.55 533.55 ZT16-19 463.0 463.0 463.0 ZT20-23 439.8 439.8 439.8