subtract 10%iles -5.92470e-05      0.00000    0.0148370    0.0365639
    0.0630112    0.0985842     0.152276     0.247895     0.494887
diff 10%iles    -0.193152   -0.0748696   -0.0319903  -0.00776863      0.00000
   0.00603771    0.0301018    0.0727856     0.190583
stardiff 10%iles   -0.0268312  -0.00913565  -0.00257763      0.00000
  0.000777393   0.00469555   0.00952218    0.0170471    0.0354839
stardiff contour -excluded 0.005   -0.0268312    0.0354839