condition mean min max ZT0-3 45.93475 45.93475 45.93475 ZT4-7 32.71685 32.71685 32.71685 ZT8-11 44.865899999999996 44.865899999999996 44.865899999999996 ZT12-15 44.955650000000006 44.955650000000006 44.955650000000006 ZT16-19 59.111 59.111 59.111 ZT20-23 44.87065 44.87065 44.87065