condition mean min max ZT0-3 342.05 342.05 342.05 ZT4-7 222.4 222.4 222.4 ZT8-11 127.7 127.7 127.7 ZT12-15 245.8 245.8 245.8 ZT16-19 286.75 286.75 286.75 ZT20-23 535.2 535.2 535.2