subtract 10%iles -0.000869513   0.00485325   0.00939226    0.0138140
    0.0186186    0.0245719    0.0333166    0.0496416    0.0958595
diff 10%iles   -0.0400085   -0.0211620   -0.0121598  -0.00555229  0.000259399
   0.00603104    0.0125427    0.0214422    0.0404673
stardiff 10%iles   -0.0243624   -0.0140582  -0.00800789  -0.00323513
   0.00104945   0.00528013   0.00989863    0.0157610    0.0262581
stardiff contour -excluded 0.005   -0.0243624    0.0262581