Performances of UTC(OP) based on LNE-SYRTE atomic fountains

This paper presents the new method implemented since October 2012 to realize UTC(OP) at LNE-SYRTE, in Observatoire de Paris (OP), France. This time scale is based on a H-Maser steered by the LNE-SYRTE atomic fountains. We describe the algorithm and we discuss the results obtained over almost 2 years of operation. Since the implementation of the new method, the departure of UTC(OP) from UTC remained well below 10 ns.