The data points for published single particle distributions come from the
trigger mode, complimented in case of
Cherenkov
veto by either
or 
for collection of 
samples (see subsection 3.4.4).
For each setting of the spectrometer's angle and magnetic field, the data was
taken
with and without the Cherenkov veto, to understand the effect of the latter.
and
data is instrumental in
understanding
the effect of 
and
on the multiplicity of the sample.