subtract 10%iles -0.000592709   0.00622869    0.0122888    0.0186605
    0.0261159    0.0359955    0.0508490    0.0774322     0.148929
diff 10%iles   -0.0543389   -0.0256898   -0.0140879  -0.00619411  0.000530243
   0.00722361    0.0149665    0.0262189    0.0528870
stardiff 10%iles   -0.0282665   -0.0147648  -0.00797055  -0.00292798
   0.00151734   0.00593830    0.0108874    0.0175067    0.0307048
stardiff contour -excluded 0.005   -0.0282665    0.0307048