condition mean min max ZT0-3 0.012577433333333334 0.012577433333333334 0.012577433333333334 ZT4-7 0.00273775 0.00273775 0.00273775 ZT8-11 0.0 0.0 0.0 ZT12-15 0.033808500000000005 0.033808500000000005 0.033808500000000005 ZT16-19 0.0541968 0.0541968 0.0541968 ZT20-23 0.014967800000000002 0.014967800000000002 0.014967800000000002