subtract 10%iles -7.15256e-05   0.00614548    0.0113449    0.0165601
    0.0225372    0.0305786    0.0438600    0.0720940     0.164230
diff 10%iles   -0.0506973   -0.0247731   -0.0138204  -0.00608826  0.000560045
   0.00709343    0.0145020    0.0250845    0.0505652
stardiff 10%iles   -0.0265162   -0.0149312  -0.00822599  -0.00295809
   0.00170438   0.00622435    0.0111040    0.0173516    0.0292232
stardiff contour -excluded 0.005   -0.0265162    0.0292232