  Conductions fluctuations (CF) are studied in single layer graphene devices
with superconducting source and drain contacts made from aluminium. The CF are
found to be enhanced by superconductivity by a factor of 1.4 to 2. This (near)
doubling of the CF indicates that the phase coherence length is l_phi >= L/2.
As compared to previous work, we find a relatively weak dependence of the CF on
the gate voltage, and hence on the carrier density. We also demonstrate that
whether the CF are larger or smaller at the charge neutrality point can be
strongly dependent on the series resistance R_C, which needs to be subtracted.
