condition mean min max ZT0-3 0.10354583333333334 0.036988 0.17010366666666668 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.38704 0.38704 0.38704