condition mean min max ZT0-3 0.47155650000000005 0.47155650000000005 0.47155650000000005 ZT4-7 0.6205505 0.6205505 0.6205505 ZT8-11 1.0992 1.0992 1.0992 ZT12-15 1.485925 1.485925 1.485925 ZT16-19 1.106964 1.106964 1.106964 ZT20-23 0.6716219999999999 0.6716219999999999 0.6716219999999999