condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.01777975 0.01777975 0.01777975 ZT8-11 0.01866105 0.01866105 0.01866105 ZT12-15 0.018217325 0.0 0.03643465 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0204015 0.0204015 0.0204015