subtract 10%iles      0.00000   0.00453925    0.0467477    0.0934073
     0.148176     0.224375     0.345727     0.569300      1.13542
diff 10%iles    -0.309529    -0.122944   -0.0514560   -0.0119619      0.00000
    0.0104170    0.0506992     0.124452     0.315495
stardiff 10%iles   -0.0492671   -0.0169632  -0.00516444      0.00000
  0.000558998   0.00700226    0.0153197    0.0288881    0.0624262
stardiff contour -excluded 0.005   -0.0492671    0.0624262