subtract 10%iles      0.00000   0.00301075    0.0534720     0.111127
     0.185466     0.293461     0.464867     0.773484      1.53495
diff 10%iles    -0.368851    -0.158242   -0.0680516   -0.0161533      0.00000
    0.0118630    0.0611880     0.147663     0.356022
stardiff 10%iles   -0.0552573   -0.0202306  -0.00607097      0.00000
  0.000445340   0.00739199    0.0161146    0.0298035    0.0606325
stardiff contour -excluded 0.005   -0.0552573    0.0606325