subtract 10%iles   0.00181198    0.0104427    0.0184064    0.0270252
    0.0374937    0.0515862    0.0731061     0.112499     0.210783
diff 10%iles   -0.0741959   -0.0356250   -0.0197358  -0.00908756 -0.000111580
   0.00871325    0.0189028    0.0338230    0.0696697
stardiff 10%iles   -0.0329827   -0.0176934  -0.00970526  -0.00364722
   0.00164545   0.00675554    0.0122660    0.0193412    0.0327368
stardiff contour -excluded 0.005   -0.0329827    0.0327367