subtract 10%iles      0.00000      0.00000    0.0186021    0.0416908
    0.0692592     0.105571     0.158619     0.251863     0.493976
diff 10%iles    -0.192410   -0.0744479   -0.0319772  -0.00807905      0.00000
   0.00571680    0.0296917    0.0724940     0.190378
stardiff 10%iles   -0.0302542   -0.0106260  -0.00331518      0.00000
  0.000387691   0.00460477   0.00981773    0.0179961    0.0385225
stardiff contour -excluded 0.005   -0.0302542    0.0385225