subtract 10%iles      0.00000      0.00000    0.0313778    0.0681036
     0.109530     0.161509     0.234775     0.355498     0.631894
stardiff 10%iles    -0.212976   -0.0950742   -0.0448158   -0.0124064
      0.00000   0.00761917    0.0400178    0.0914732     0.215742
stardiff contour -excluded 0.005    -0.212976     0.215742