condition mean min max ZT0-3 13.982800000000001 13.982800000000001 13.982800000000001 ZT4-7 34.652150000000006 34.652150000000006 34.652150000000006 ZT8-11 14.000499999999999 14.000499999999999 14.000499999999999 ZT12-15 9.124935 9.124935 9.124935 ZT16-19 5.76984 5.76984 5.76984 ZT20-23 7.601235 7.601235 7.601235