subtract 10%iles      0.00000    0.0144966    0.0574214     0.102377
     0.153729     0.218223     0.309166     0.459851     0.800653
stardiff 10%iles    -0.383518    -0.151467   -0.0637072   -0.0142248
      0.00000    0.0134249    0.0642193     0.154624     0.390953
stardiff contour -excluded 0.005    -0.383518     0.390952