subtract 10%iles      0.00000      0.00000    0.0310056    0.0718880
     0.122642     0.192972     0.301593     0.482793     0.883537
diff 10%iles    -0.325128    -0.132363   -0.0546875   -0.0122230      0.00000
    0.0102320    0.0514007     0.127530     0.320637
stardiff 10%iles   -0.0453261   -0.0151610  -0.00383132      0.00000
   0.00114451   0.00702304    0.0146121    0.0268173    0.0545707
stardiff contour -excluded 0.005   -0.0453261    0.0545707