subtract 10%iles      0.00000      0.00000    0.0300431    0.0722556
     0.123935     0.190681     0.284906     0.437539     0.774566
stardiff 10%iles    -0.252386    -0.111561   -0.0514848   -0.0146497
      0.00000   0.00533046    0.0395091    0.0975539     0.239732
stardiff contour -excluded 0.005    -0.252386     0.239731