The using-2f suffix in this case really 
just means that delta_cp, and solar terms,
are zero when computing the oscillation probabilities.

Files without the suffix have been computed
using solar terms, but zero delta_cp


Animated *.gif files have been generated with three flavor 
oscillations including solar parameters. There are 100 frames
in each movie, each representing the effect of some value of Theta13.
The frames are spaced equally in the interval [0, CHOOZ limit]