subtract 10%iles      0.00000   0.00830960    0.0598903     0.111271
     0.171807     0.248971     0.359101     0.542966     0.973471
stardiff 10%iles    -0.286905    -0.129220   -0.0611667   -0.0187439
      0.00000   0.00629202    0.0485879     0.118406     0.279999
stardiff contour -excluded 0.005    -0.286905     0.279998