subtract 10%iles      0.00000      0.00000    0.0226738    0.0544848
    0.0928010     0.142909     0.215782     0.341038     0.643665
diff 10%iles    -0.245521   -0.0998666   -0.0430372   -0.0100884      0.00000
   0.00837040    0.0404639    0.0964397     0.242416
stardiff 10%iles   -0.0354103   -0.0120111  -0.00326417      0.00000
  0.000879794   0.00563734    0.0115163    0.0207451    0.0428748
stardiff contour -excluded 0.005   -0.0354103    0.0428747