subtract 10%iles  2.86102e-06   0.00642443    0.0119343    0.0175610
    0.0239544    0.0321007    0.0439777    0.0647666     0.116877
diff 10%iles   -0.0514565   -0.0260372   -0.0146873  -0.00665665  0.000308990
   0.00724506    0.0151777    0.0263863    0.0515137
stardiff 10%iles   -0.0250781   -0.0142058  -0.00792374  -0.00300507
   0.00140248   0.00575709    0.0105245    0.0165842    0.0272492
stardiff contour -excluded 0.005   -0.0250781    0.0272492