subtract 10%iles -9.58443e-05   0.00598526    0.0110021    0.0159645
    0.0214424    0.0282965    0.0383549    0.0570188     0.109295
diff 10%iles   -0.0456696   -0.0237980   -0.0135839  -0.00614452  0.000377178
   0.00684357    0.0141432    0.0242081    0.0462155
stardiff 10%iles   -0.0250524   -0.0145602  -0.00822873  -0.00318671
   0.00134730   0.00579384    0.0105971    0.0166089    0.0270055
stardiff contour -excluded 0.005   -0.0250524    0.0270055