subtract 10%iles  -0.00108337    0.0219440    0.0447226    0.0704126
     0.101383     0.141021     0.195982     0.282187     0.464325
diff 10%iles    -0.202876    -0.102049   -0.0551319   -0.0244217  0.000209808
    0.0247259    0.0551453     0.101744     0.201959
stardiff 10%iles   -0.0485243   -0.0233543   -0.0113588  -0.00313380
   0.00380689    0.0106292    0.0184171    0.0292578    0.0508090
stardiff contour -excluded 0.005   -0.0485243    0.0508090