subtract 10%iles -0.000309706   0.00619578    0.0116882    0.0172012
    0.0233297    0.0309839    0.0420318    0.0617051     0.114716
diff 10%iles   -0.0498581   -0.0254135   -0.0143166  -0.00634384  0.000595093
   0.00747180    0.0152893    0.0262728    0.0510945
stardiff 10%iles   -0.0257014   -0.0146124  -0.00804509  -0.00286717
   0.00174469   0.00624713    0.0111220    0.0172892    0.0283341
stardiff contour -excluded 0.005   -0.0257014    0.0283341