subtract 10%iles  -0.00107956   0.00875330    0.0179532    0.0285015
    0.0421352    0.0614557    0.0914097     0.145200     0.278177
diff 10%iles    -0.117494   -0.0522871   -0.0265934   -0.0115023  0.000326633
    0.0120354    0.0267358    0.0515823     0.114498
stardiff 10%iles   -0.0362218   -0.0175678  -0.00905127  -0.00290161
   0.00242149   0.00763729    0.0134802    0.0215017    0.0385602
stardiff contour -excluded 0.005   -0.0362218    0.0385602