Changing the k range (preliminary)

I am so frustrated, I cannot get the gridding routine to work. Of course I could grid it up myself, but I really would prefer to use the scipy version, with the pretty cubic splining instead of just a 2D histogram. But for now, I have made some k range studies using points instead. Below I have varied only the two parameters, and I have zoomed in on the region in question:



Looks here like the k range has little to no effect on the degeneracy region. The hypothesis about the edge effects dominating the threshold must therefore be wrong. There must be some other explanation for these super straight edges.

Below I am just showing that extending the k range in the other direction seems to have more of an effect (I forgot to zoom in that time):



Here I have varied all the parameters but $\Omega_b h^2$, which we saw in previous plots has little to no effect on the degeneracy region.



Not the colors on the two ranges have been swapped (oops). We see that qualitatively this seems to be the same type of effect as in the two parameter case in the bottom right. Hard to tell in the upper left. All this will look much clearer once I can start drawing contours.