condition mean min max ZT0-3 97.441756 97.441756 97.441756 ZT4-7 121.2237755 121.2237755 121.2237755 ZT8-11 112.4243735 112.4243735 112.4243735 ZT12-15 97.2149005 97.2149005 97.2149005 ZT16-19 104.67980850000001 104.67980850000001 104.67980850000001 ZT20-23 98.2604665 98.2604665 98.2604665