condition mean min max ZT0-3 6453.25 6453.25 6453.25 ZT4-7 8714.2 8714.2 8714.2 ZT8-11 8005.7 8005.7 8005.7 ZT12-15 6016.799999999999 6016.799999999999 6016.799999999999 ZT16-19 6049.8 6049.8 6049.8 ZT20-23 5940.75 5940.75 5940.75