figure cosmetics

[aphearin]

Suggestions from Frank: perhaps we can combine Figs. 2 3 and 4 in a single figure. Also, I suggest to indicate in the figure a caption stating what sample this is (so I don’t have to get this information from the caption; this also applies to Figs 5-7). Also I suggest making the symbols a bit larger (for aesthetic reasons)

[aphearin]

Suggestions from APH:

1. To make the labels of the numerical values of the axis values larger: plt.xticks(size=15) and similarly for plt.yticks.
2. Use the fontsize keyword to make the font in the axis labeling appear larger: plt.xlabel(r'$r_{\rm p}$ $[Mpc/h]$, fontsize=20)
3. To fine-tune the vertical and horizontal range: plt.ylim(ymin = 10, ymax=1e3) and similarly for plt.xlim.
4. The y-axis in the wp figures needs units of Mpc/h.

[andrew-zentner]

Changes font sizes, changed axis labels. Added units to both x and y axes. Also changed the Delta chi^2 range to 5.89, which is the change in chi^2 that contains 68% of the posterior if the posterior is a multivariate Gaussian. This seems to be a better representation of the variability of the fit, but actually make little to no practical difference in the plots because the chi^2 function varies very rapidly due to the small errorbars.