subtract 10%iles  0.000163555   0.00641966    0.0117624    0.0172734
    0.0238376    0.0329142    0.0472164    0.0735817     0.147068
diff 10%iles   -0.0456238   -0.0229120   -0.0129051  -0.00575829  0.000442505
   0.00658178    0.0135453    0.0232804    0.0456011
stardiff 10%iles   -0.0279589   -0.0153387  -0.00854434  -0.00333004
   0.00128308   0.00580663    0.0107704    0.0172274    0.0298473
stardiff contour -excluded 0.005   -0.0279589    0.0298472