condition mean min max ZT0-3 332.85 332.85 332.85 ZT4-7 292.2 292.2 292.2 ZT8-11 371.45 371.45 371.45 ZT12-15 441.15 441.15 441.15 ZT16-19 364.85 364.85 364.85 ZT20-23 334.75 334.75 334.75