condition mean min max ZT0-3 323.1 323.1 323.1 ZT4-7 699.2 699.2 699.2 ZT8-11 616.9 616.9 616.9 ZT12-15 661.0 661.0 661.0 ZT16-19 565.9 565.9 565.9 ZT20-23 323.75 323.75 323.75