none 

Statements about this table:
7 be the earliest season with a premiere of february 5 , 2007
september 20 , 2010 premiere have more than 15 episode
september 20 , 2010 premiere have more than 15 episode after season 5
season
episodes
premiere
finale
dvd release date
1
7
february 5 , 2007
march 19 , 2007
september 4 , 2007
2
15
september 24 , 2007
may 19 , 2008
october 14 , 2008
3
13
march 2 , 2009
may 18 , 2009
september 14 , 2010
4
13
march 1 , 2010
may 24 , 2010
january 11 , 2011
season
episodes
premiere
finale
dvd release date
5
24
september 20 , 2010
may 19 , 2011
february 7 , 2012
6
15
october 20 , 2011
may 17 , 2012
october 2 , 2012
7
13
february 4 , 2013
may 20 , 2013
n / a