subtract 10%iles  -0.00110102   0.00517416    0.0105791    0.0163784
    0.0235157    0.0335970    0.0499487    0.0815685     0.169100
diff 10%iles   -0.0704589   -0.0304184   -0.0158997  -0.00694466  0.000445366
   0.00787640    0.0170221    0.0320368    0.0736461
stardiff 10%iles   -0.0262616   -0.0133890  -0.00710707  -0.00246736
   0.00165171   0.00580763    0.0106037    0.0173300    0.0317418
stardiff contour -excluded 0.005   -0.0262616    0.0317418