subtract 10%iles      0.00000   0.00274664    0.0353274    0.0709419
     0.112140     0.165764     0.244782     0.383232     0.718606
diff 10%iles    -0.256202    -0.101198   -0.0430551   -0.0106980      0.00000
   0.00777102    0.0405040     0.100036     0.257010
stardiff 10%iles   -0.0383095   -0.0134926  -0.00413117      0.00000
  0.000467315   0.00567624    0.0122100    0.0225677    0.0481130
stardiff contour -excluded 0.005   -0.0383095    0.0481130