Table:
text: Vince Gilligan
Writer
Writer
Year_ Show_ Season Episode Episode_number Original_airdate
2008 Breaking Bad 1 Cancer Man 4 February 17, 2008
2009 Breaking Bad 2 Peekaboo 6 April 12, 2009
2009 Breaking Bad 2 ABQ 13 May 31, 2009
2010 Breaking Bad 3 No Mas 1 March 21, 2010
2010 Breaking Bad 3  Full Measure  13 June 13, 2010
2011 Breaking Bad 4  Box Cutter  1 July 17, 2011
2011 Breaking Bad 4  Face Off  13 October 9, 2011
2012 Breaking Bad 5  Live Free or Die  1 July 15, 2012
2012 Breaking Bad 5  Madrigal  2 July 22, 2012
2013 Breaking Bad 5  Felina  16 September 29, 2013

text: Vince Gilligan
Writer
Writer
Year_ Show_ Season Episode Episode_number Original_airdate
1995 The X-Files 2  Soft Light  23 May 5, 1995
1996 The X-Files 3  Pusher  17 February 23, 1996
1996 The X-Files 4  Unruhe  4 October 27, 1996
1996 The X-Files 4  Paper Hearts  10 December 15, 1996
1997 The X-Files 4  Leonard Betts  12 January 26, 1997
1997 The X-Files 4  Memento Mori  14 February 9, 1997
1997 The X-Files 4  Small Potatoes  20 April 20, 1997
1997 The X-Files 5  Unusual Suspects  3 November 16, 1997
1997 The X-Files 5  Christmas Carol  6 December 7, 1997
1997 The X-Files 5  Emily  7 December 14, 1997

Question: What is the average episode number if the original air date is March 21, 2010 and if the season is less than 3 for Vince Gilligan?