subtract 10%iles  -0.00115204   0.00498199   0.00992393    0.0147662
    0.0200393    0.0265675    0.0361152    0.0540004     0.107812
diff 10%iles   -0.0438042   -0.0218840   -0.0122294  -0.00538254  0.000566483
   0.00650406    0.0133269    0.0229969    0.0452971
stardiff 10%iles   -0.0242288   -0.0133816  -0.00739434  -0.00278243
   0.00133935   0.00543591   0.00999466    0.0159508    0.0272065
stardiff contour -excluded 0.005   -0.0242288    0.0272064