condition mean min max ZT0-3 164.8 164.8 164.8 ZT4-7 249.6 249.6 249.6 ZT8-11 256.7 256.7 256.7 ZT12-15 265.95 265.95 265.95 ZT16-19 265.2 265.2 265.2 ZT20-23 152.45 152.45 152.45