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We compare the results of two recent papers dealing with the determination of the Free Core Nutation (FCN) parameters (eigenperiod T and quality factor Q) using Superconducting Gravimeters operating in Europe as part of the Global Geodynamics project.We investigate the influence of the procedure of estimation of the parameters on the results.The Bayesian (BA) approach is very robust as the results are very stable against the changes in the selected stations and the choice of the Ocean Tides Models (OTMs) used to correct the tidal loading.Our new results BA2013 (T =428.5 ± 2.7days;5,248
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