subtract 10%iles  -0.00144148   0.00918961    0.0188189    0.0291824
    0.0413160    0.0569417    0.0797536     0.119567     0.218791
diff 10%iles    -0.103012   -0.0477905   -0.0257013   -0.0114913  0.000272751
    0.0120325    0.0262108    0.0481906     0.102992
stardiff 10%iles   -0.0324294   -0.0163127  -0.00831426  -0.00253210
   0.00248481   0.00746540    0.0130975    0.0207294    0.0357646
stardiff contour -excluded 0.005   -0.0324294    0.0357646