op_to_obs(opTable, lp, writeFiles=True) -> dict:
'''
Take the operators from loadDens and combine them into physically meaningful observables. Some terminology:
l--light
s--strange
B--baryon number
Q--electric charge
I--isospin
S--strangeness
Args:
opTable (dict): Operators loaded from loadDens.
lp (HotQCD_MILC_Params): latticeParams object with info about the ensemble.
writeFiles (bool, optional): Write final observables in denseObservables directory. Defaults to True.
Returns:
dict: Final observables
'''