subtract 10%iles  -0.00139046   0.00649929    0.0132294    0.0202379
    0.0283127    0.0387516    0.0542660    0.0824413     0.155700
diff 10%iles   -0.0686569   -0.0332148   -0.0183547  -0.00816917  0.000537395
   0.00919342    0.0192461    0.0340538    0.0698521
stardiff 10%iles   -0.0283187   -0.0157058  -0.00850181  -0.00289068
   0.00208028   0.00692238    0.0121777    0.0189047    0.0313077
stardiff contour -excluded 0.005   -0.0283187    0.0313077