subtract 10%iles  0.000808716    0.0271964    0.0517344    0.0785847
     0.109809     0.148335     0.199890     0.278862     0.441681
diff 10%iles    -0.173793   -0.0866008   -0.0469856   -0.0208263  0.000713348
    0.0222616    0.0483937    0.0877323     0.174036
stardiff 10%iles   -0.0414050   -0.0211324   -0.0107375  -0.00313475
   0.00348447    0.0100486    0.0174243    0.0272024    0.0452480
stardiff contour -excluded 0.005   -0.0414050    0.0452479