subtract 10%iles -0.000213623   0.00616837    0.0117826    0.0175493
    0.0240977    0.0324512    0.0448074    0.0675983     0.131481
diff 10%iles   -0.0507755   -0.0256443   -0.0143986  -0.00636721  0.000631332
   0.00761318    0.0156274    0.0271435    0.0552120
stardiff 10%iles   -0.0274869   -0.0153675  -0.00846042  -0.00309037
   0.00168999   0.00638556    0.0115325    0.0182183    0.0310502
stardiff contour -excluded 0.005   -0.0274869    0.0310502