subtract 10%iles      0.00000   0.00294530    0.0469024    0.0971513
     0.162758     0.258320     0.408556     0.678891      1.33585
diff 10%iles    -0.340781    -0.146226   -0.0629401   -0.0151013      0.00000
    0.0108335    0.0564132     0.136520     0.329579
stardiff 10%iles   -0.0515249   -0.0188219  -0.00580215      0.00000
  0.000249304   0.00681371    0.0152000    0.0283865    0.0579593
stardiff contour -excluded 0.005   -0.0515249    0.0579593