subtract 10%iles  0.000801086   0.00628662    0.0109477    0.0156598
    0.0210423    0.0279698    0.0381517    0.0562668     0.103487
diff 10%iles   -0.0394993   -0.0203733   -0.0116186  -0.00540257 -9.53674e-07
   0.00540113    0.0115933    0.0203133    0.0394173
stardiff 10%iles   -0.0230348   -0.0129075  -0.00733026  -0.00307283
  0.000723494   0.00451318   0.00875723    0.0143402    0.0247434
stardiff contour -excluded 0.005   -0.0230348    0.0247434