condition mean min max ZT0-3 0.85174125 0.741301 0.9621815 ZT4-7 0.921732 0.921732 0.921732 ZT8-11 1.79836 1.79836 1.79836 ZT12-15 0 0 0 ZT16-19 3.577515 3.577515 3.577515 ZT20-23 2.02635 2.02635 2.02635