subtract 10%iles  -0.00128031   0.00852203    0.0169766    0.0258973
    0.0363684    0.0499840    0.0699592     0.104836     0.190494
diff 10%iles   -0.0856590   -0.0405426   -0.0218997  -0.00971532  0.000454903
    0.0106096    0.0227723    0.0415421    0.0869570
stardiff 10%iles   -0.0299057   -0.0161655  -0.00864885  -0.00292650
   0.00214981   0.00715705    0.0126838    0.0198723    0.0331226
stardiff contour -excluded 0.005   -0.0299057    0.0331226