condition mean min max ZT0-3 156.624 156.624 156.624 ZT4-7 164.66500000000002 164.66500000000002 164.66500000000002 ZT8-11 106.555 106.555 106.555 ZT12-15 83.91975 83.91975 83.91975 ZT16-19 86.65715 86.65715 86.65715 ZT20-23 133.6525 133.6525 133.6525