subtract 10%iles      0.00000    0.0177448    0.0919075     0.181378
     0.297370     0.461207     0.715381      1.16197      2.17299
stardiff 10%iles    -0.694768    -0.294358    -0.124270   -0.0241020
      0.00000    0.0280090     0.127328     0.295464     0.692970
stardiff contour -excluded 0.005    -0.694768     0.692970