Complex sentence: Series 9 consisted of nine episodes which aired from 6 January-3 March 2013, followed by a six-part tenth series in the summer, airing between 29 June and 3 August 2013.
Split into simpler sentences: Series 9 consisted of nine episodes which aired from 6 January-3 March 2013. This was followed by a six-part tenth series in the summer, airing between 29 June and 3 August 2013.