subtract 10%iles  -0.00208473    0.0105753    0.0228786    0.0370350
    0.0544949    0.0777588     0.112002     0.170746     0.311951
diff 10%iles    -0.144813   -0.0669184   -0.0353026   -0.0159085 -0.000637054
    0.0144429    0.0331769    0.0633411     0.137737
stardiff 10%iles   -0.0432893   -0.0206158   -0.0104997  -0.00350492
   0.00245210   0.00830583    0.0149197    0.0240528    0.0429790
stardiff contour -excluded 0.005   -0.0432893    0.0429790