subtract 10%iles  -0.00102997   0.00932884    0.0186415    0.0286295
    0.0402718    0.0552673    0.0770960     0.114996     0.208179
diff 10%iles    -0.103759   -0.0481110   -0.0258789   -0.0115280  0.000361443
    0.0122404    0.0265539    0.0487061     0.104184
stardiff 10%iles   -0.0311105   -0.0158879  -0.00811173  -0.00240907
   0.00257413   0.00752600    0.0131073    0.0205884    0.0348379
stardiff contour -excluded 0.005   -0.0311105    0.0348379