subtract 10%iles  0.000844955   0.00698280    0.0120640    0.0171309
    0.0229130    0.0305462    0.0424299    0.0653090     0.130179
diff 10%iles   -0.0502663   -0.0244770   -0.0136976  -0.00622320  0.000217438
   0.00662136    0.0140219    0.0247307    0.0506577
stardiff 10%iles   -0.0252225   -0.0141803  -0.00795771  -0.00311679
   0.00122421   0.00553624    0.0102904    0.0164248    0.0278241
stardiff contour -excluded 0.005   -0.0252225    0.0278241