  Preliminary femtoscopic results on identical pions from high statistics data
set of Au+Au collisions at sqrt{s_NN}=200 GeV taken during the fourth RHIC run
are presented. The measured three-dimensional correlation function is studied
at low relative momenta using the Gaussian parametrization and the Levy stable
parametrization. The latter is expected to better describe the data. As the
results show, both parametrizations underestimate the peak of the measured
correlation function equally.
