condition mean min max ZT0-3 0.9791939999999999 0.0 1.9583879999999998 ZT4-7 0.980268 0.980268 0.980268 ZT8-11 0.0 0.0 0.0 ZT12-15 0 0 0 ZT16-19 1.92841 1.92841 1.92841 ZT20-23 0.0 0.0 0.0