subtract 10%iles  0.000325441   0.00595927    0.0107079    0.0154979
    0.0209889    0.0281639    0.0390234    0.0591202     0.115337
stardiff 10%iles   -0.0511279   -0.0233826   -0.0125121  -0.00529420
  0.000850745   0.00705191    0.0145086    0.0261320    0.0568386
stardiff contour -excluded 0.005   -0.0511279    0.0568385