condition mean min max ZT0-3 74.249098 74.249098 74.249098 ZT4-7 78.5526435 78.5526435 78.5526435 ZT8-11 87.629084 87.629084 87.629084 ZT12-15 110.07140799999999 110.07140799999999 110.07140799999999 ZT16-19 105.515069 105.515069 105.515069 ZT20-23 102.19941800000001 102.19941800000001 102.19941800000001