subtract 10%iles      0.00000  0.000884503    0.0467372     0.104847
     0.172700     0.256868     0.370505     0.546237     0.924652
stardiff 10%iles    -0.312016    -0.141113   -0.0662769   -0.0190675
      0.00000   0.00719221    0.0523022     0.126725     0.302736
stardiff contour -excluded 0.005    -0.312016     0.302736