condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.01788625 0.01788625 0.01788625 ZT8-11 0.0147862 0.0147862 0.0147862 ZT12-15 0.0 0.0 0.0 ZT16-19 0.015093583333333334 0.015093583333333334 0.015093583333333334 ZT20-23 0.0 0.0 0.0