condition mean min max ZT0-3 384.1 384.1 384.1 ZT4-7 252.4 252.4 252.4 ZT8-11 297.9 297.9 297.9 ZT12-15 254.6 254.6 254.6 ZT16-19 355.0 355.0 355.0 ZT20-23 481.85 481.85 481.85