condition mean min max ZT0-3 323.9 323.9 323.9 ZT4-7 292.2 292.2 292.2 ZT8-11 327.05 327.05 327.05 ZT12-15 217.8 217.8 217.8 ZT16-19 394.6 394.6 394.6 ZT20-23 379.0 379.0 379.0