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National Physical Laboratory, New Delhi (NPLI) has been maintaining time scale UTC (NPLI) with only one cesium atomic clock. NPLI has recently developed an automatic intercomparison system for the development of better time scale combining all its five clocks. A new algorithm has also been developed for this purpose. Using this algorithm, the analysis has been done based on the preliminary measurement data. Algorithm seems to produce encouraging results. This paper elaborates the algorithm and presents the analytical observations.