condition mean min max ZT0-3 22.358999 22.358999 22.358999 ZT4-7 24.7215385 24.7215385 24.7215385 ZT8-11 22.108125 22.108125 22.108125 ZT12-15 20.971525 20.971525 20.971525 ZT16-19 23.0660555 23.0660555 23.0660555 ZT20-23 23.4192345 23.4192345 23.4192345