subtract 10%iles -0.000391006   0.00537491    0.0100794    0.0147362
    0.0199404    0.0266294    0.0368235    0.0561650     0.110101
diff 10%iles   -0.0449772   -0.0227513   -0.0128660  -0.00584698  0.000238180
   0.00629807    0.0132124    0.0229683    0.0452309
stardiff 10%iles   -0.0247829   -0.0140118  -0.00788645  -0.00312867
   0.00112635   0.00533593   0.00996152    0.0159109    0.0268002
stardiff contour -excluded 0.005   -0.0247829    0.0268002