subtract 10%iles -0.000522137   0.00572467    0.0109544    0.0161891
    0.0221090    0.0298781    0.0420904    0.0664082     0.141335
diff 10%iles   -0.0442491   -0.0226741   -0.0128794  -0.00577211  0.000456810
   0.00662708    0.0135860    0.0231953    0.0444946
stardiff 10%iles   -0.0270270   -0.0151829  -0.00851939  -0.00330587
   0.00135255   0.00592227    0.0109100    0.0173189    0.0294315
stardiff contour -excluded 0.005   -0.0270270    0.0294314