condition mean min max ZT0-3 12.169899999999998 12.169899999999998 12.169899999999998 ZT4-7 22.71085 22.71085 22.71085 ZT8-11 44.24765 44.24765 44.24765 ZT12-15 41.191199999999995 41.191199999999995 41.191199999999995 ZT16-19 25.2675 25.2675 25.2675 ZT20-23 17.480400000000003 17.480400000000003 17.480400000000003