condition mean min max ZT0-3 31.8694 22.324849999999998 41.41395 ZT4-7 2.1600805000000003 2.1600805000000003 2.1600805000000003 ZT8-11 1.785355 1.785355 1.785355 ZT12-15 0 0 0 ZT16-19 2.04418 2.04418 2.04418 ZT20-23 0.68651 0.68651 0.68651