condition mean min max ZT0-3 122.74014999999999 78.43195 210.13799999999998 ZT4-7 184.716 184.716 184.716 ZT8-11 16.8709 16.8709 16.8709 ZT12-15 2.6163725 2.5947750000000003 2.63797 ZT16-19 2.774085 2.774085 2.774085 ZT20-23 6.089 6.089 6.089