condition mean min max ZT0-3 316.45 316.45 316.45 ZT4-7 234.0 234.0 234.0 ZT8-11 212.45 212.45 212.45 ZT12-15 164.1 164.1 164.1 ZT16-19 288.4 288.4 288.4 ZT20-23 371.6 371.6 371.6