subtract 10%iles -0.000432730   0.00604677    0.0115390    0.0170872
    0.0232759    0.0310059    0.0421338    0.0619020     0.114161
diff 10%iles   -0.0509319   -0.0259562   -0.0146732  -0.00660706  0.000391960
   0.00732231    0.0152097    0.0262647    0.0510259
stardiff 10%iles   -0.0258581   -0.0147164  -0.00816502  -0.00301509
   0.00156112   0.00603422    0.0108793    0.0169833    0.0277249
stardiff contour -excluded 0.005   -0.0258581    0.0277249