subtract 10%iles -0.000111580   0.00603056    0.0111735    0.0163941
    0.0224476    0.0306168    0.0437469    0.0694160     0.139324
diff 10%iles   -0.0499403   -0.0243485   -0.0135794  -0.00609398  0.000347137
   0.00675488    0.0141392    0.0248718    0.0510211
stardiff 10%iles   -0.0255446   -0.0142614  -0.00792212  -0.00300609
   0.00137871   0.00570987    0.0104846    0.0167016    0.0285181
stardiff contour -excluded 0.005   -0.0255446    0.0285181