subtract 10%iles -0.000541449   0.00609970    0.0117521    0.0175660
    0.0241742    0.0326157    0.0449467    0.0667810     0.124671
diff 10%iles   -0.0571771   -0.0281963   -0.0157447  -0.00712395  0.000295639
   0.00769234    0.0162563    0.0286369    0.0574815
stardiff 10%iles   -0.0257105   -0.0142498  -0.00785504  -0.00291787
   0.00149157   0.00586411    0.0106926    0.0169242    0.0282291
stardiff contour -excluded 0.005   -0.0257105    0.0282291