subtract 10%iles      0.00000      0.00000    0.0231881    0.0530068
    0.0888565     0.135854     0.204021     0.322265     0.614676
diff 10%iles    -0.233940   -0.0941710   -0.0407426  -0.00986660      0.00000
   0.00755608    0.0379602    0.0909798     0.230531
stardiff 10%iles   -0.0356188   -0.0121149  -0.00340992      0.00000
  0.000689887   0.00533076    0.0110790    0.0202411    0.0426976
stardiff contour -excluded 0.005   -0.0356188    0.0426976