condition mean min max ZT0-3 106.350466 106.350466 106.350466 ZT4-7 77.83959949999999 77.83959949999999 77.83959949999999 ZT8-11 86.232156 86.232156 86.232156 ZT12-15 104.04850400000001 104.04850400000001 104.04850400000001 ZT16-19 87.31335849999999 87.31335849999999 87.31335849999999 ZT20-23 62.265662500000005 62.265662500000005 62.265662500000005