condition mean min max ZT0-3 312.15 312.15 312.15 ZT4-7 445.1 445.1 445.1 ZT8-11 441.35 441.35 441.35 ZT12-15 572.7 572.7 572.7 ZT16-19 451.5 451.5 451.5 ZT20-23 270.65 270.65 270.65