condition mean min max ZT0-3 706.9 706.9 706.9 ZT4-7 323.6 323.6 323.6 ZT8-11 289.85 289.85 289.85 ZT12-15 240.45 240.45 240.45 ZT16-19 252.1 252.1 252.1 ZT20-23 317.55 317.55 317.55