sentences:  From its inception in June 2003 through November 2013, the Hot Christian Songs chart ranked the top songs only by overall audience impressions of songs played on contemporary Christian music radio stations.Beginning with the chart dated December 7, 2013, the chart follows the same methodology used for the Hot 100 to compile its rankings.The Christian Airplay chart was created in unison with the change to continue to monitor airplay of songs on Christian radio.