subtract 10%iles      0.00000      0.00000    0.0673306     0.150243
     0.255938     0.408234     0.648163      1.07553      2.05127
stardiff 10%iles    -0.697927    -0.300690    -0.129744   -0.0277640
      0.00000    0.0311109     0.131930     0.300683     0.695349
stardiff contour -excluded 0.005    -0.697927     0.695349