subtract 10%iles      0.00000  0.000982761    0.0411534    0.0910665
     0.152421     0.239366     0.366235     0.569787      1.00440
diff 10%iles    -0.363004    -0.150204   -0.0626624   -0.0137472      0.00000
    0.0117992    0.0588760     0.144609     0.359038
stardiff 10%iles   -0.0537162   -0.0181111  -0.00463536      0.00000
   0.00122546   0.00825070    0.0174925    0.0323821    0.0658443
stardiff contour -excluded 0.005   -0.0537162    0.0658441