subtract 10%iles -0.000450611   0.00536728    0.0101271    0.0148296
    0.0200486    0.0266647    0.0365348    0.0549068     0.106438
diff 10%iles   -0.0452805   -0.0228519   -0.0128665  -0.00572252  0.000499249
   0.00667286    0.0136905    0.0235579    0.0461254
stardiff 10%iles   -0.0248357   -0.0141098  -0.00787509  -0.00296785
   0.00142743   0.00575265    0.0104574    0.0164567    0.0273532
stardiff contour -excluded 0.005   -0.0248357    0.0273532