subtract 10%iles -0.000543594   0.00991869    0.0187640    0.0277185
    0.0377569    0.0503120    0.0682716     0.100108     0.184647
diff 10%iles   -0.0632477   -0.0335670   -0.0192351  -0.00885296  0.000236511
   0.00932527    0.0197039    0.0340528    0.0638657
stardiff 10%iles   -0.0352279   -0.0195044   -0.0107816  -0.00412508
   0.00181038   0.00770948    0.0142725    0.0227894    0.0380440
stardiff contour -excluded 0.005   -0.0352279    0.0380440