Retrieve datasets for plotting
Overlay acceptance ratio with ratio from MC

Try to scale MC data point overlay to match with acceptance function.
Not quite working (FIXME) at the moment probably because of outliers.
See if dynamic bin merging (TODO) fixes it.
Variable binning for MC overlay in ratio plot

Merge acceptance histogram bins where

  bin error / bin content ≥ 10%

for either Dsπ or DsK acceptance histograms.  Recalculate the
acceptance ratio with the new binning and overlay on the best fit
ratio function.
Clean up ratio plot script with comments