subtract 10%iles  0.000702620   0.00636625    0.0111279    0.0159302
    0.0214977    0.0290341    0.0412788    0.0659161     0.133466
diff 10%iles   -0.0459776   -0.0227995   -0.0128555  -0.00590897  0.000103712
   0.00609922    0.0129995    0.0228696    0.0458717
stardiff 10%iles   -0.0252567   -0.0140032  -0.00791946  -0.00324874
  0.000939188   0.00511060   0.00974343    0.0157908    0.0272442
stardiff contour -excluded 0.005   -0.0252567    0.0272442