subtract 10%iles  -0.00251722    0.0145798    0.0312502    0.0504956
    0.0741503     0.104973     0.148267     0.217369     0.364504
diff 10%iles    -0.179131   -0.0885000   -0.0469103   -0.0205116  5.10216e-05
    0.0204620    0.0464287    0.0872250     0.176619
stardiff 10%iles   -0.0432722   -0.0209427   -0.0103356  -0.00296467
   0.00330569   0.00945841    0.0164186    0.0259642    0.0446930
stardiff contour -excluded 0.005   -0.0432722    0.0446930