season                                     timeslot ( et )      season premiere        season finale    tv season   rank  viewers (millions)
0        1                                   wednesday 9:00 pm   september 5 , 2001   december 13 , 2001  2001 - 2002     73                8.80
1        2                                   wednesday 9:00 pm      march 11 , 2002        may 15 , 2002  2001 - 2002     49               10.30
2        3                                   wednesday 9:00 pm     october 2 , 2002   december 18 , 2002         2002     71                8.98
3        4                                    thursday 8:00 pm        may 29 , 2003     august 21 , 2003         2003  n / a                8.32
4        5                                    tuesday 10:00 pm        july 6 , 2004  september 21 , 2004         2004  n / a               10.73
5        6                                     tuesday 9:00 pm   november 16 , 2004    february 8 , 2005  2004 - 2005     31               11.54
6        7                                     tuesday 9:00 pm       march 1 , 2005        may 10 , 2005  2004 - 2005     25               13.05
7        8                                     tuesday 9:00 pm  september 27 , 2005   december 13 , 2005  2005 - 2006     42               10.80
8        9  tuesday 9:00 pm tuesday 10:00 pm wednesday 8:00 pm   february 28 , 2006        may 17 , 2006  2005 - 2006     56                9.10
9       10                                      sunday 8:00 pm  september 17 , 2006   december 10 , 2006  2006 - 2007     31               11.50
10      11                                      sunday 8:00 pm   february 18 , 2007         may 6 , 2007  2006 - 2007     44               10.10
11      12                                      sunday 8:00 pm    november 4 , 2007    january 20 , 2008  2007 - 2008     25               11.84
12      13                                      sunday 8:00 pm  september 28 , 2008    december 7 , 2008  2008 - 2009     27               11.14
13      14                                      sunday 8:00 pm   february 15 , 2009        may 10 , 2009  2008 - 2009     29               10.91
14      15                                      sunday 8:00 pm  september 27 , 2009    december 6 , 2009  2009 - 2010     28               11.14
15      16                                      sunday 8:00 pm   february 14 , 2010         may 9 , 2010  2009 - 2010     29               10.40
16      17                                      sunday 8:00 pm  september 26 , 2010   december 12 , 2010  2010 - 2011     22               11.93
17      18                                      sunday 8:00 pm   february 20 , 2011         may 8 , 2011  2010 - 2011     39               10.35
18      19                                      sunday 8:00 pm  september 25 , 2011   december 11 , 2011  2011 - 2012     34               11.13
19      20                                      sunday 8:00 pm   february 19 , 2012         may 6 , 2012  2011 - 2012     37               10.30
20      21                                      sunday 8:00 pm  september 30 , 2012    december 9 , 2012  2012 - 2013     29               10.68
21      22                                      sunday 8:00 pm   february 17 , 2013         may 5 , 2013  2012 - 2013     36               10.17

Table as JSON:
{"season":{"0":1,"1":2,"2":3,"3":4,"4":5,"5":6,"6":7,"7":8,"8":9,"9":10,"10":11,"11":12,"12":13,"13":14,"14":15,"15":16,"16":17,"17":18,"18":19,"19":20,"20":21,"21":22},"timeslot ( et )":{"0":"wednesday 9:00 pm","1":"wednesday 9:00 pm","2":"wednesday 9:00 pm","3":"thursday 8:00 pm","4":"tuesday 10:00 pm","5":"tuesday 9:00 pm","6":"tuesday 9:00 pm","7":"tuesday 9:00 pm","8":"tuesday 9:00 pm tuesday 10:00 pm wednesday 8:00 pm","9":"sunday 8:00 pm","10":"sunday 8:00 pm","11":"sunday 8:00 pm","12":"sunday 8:00 pm","13":"sunday 8:00 pm","14":"sunday 8:00 pm","15":"sunday 8:00 pm","16":"sunday 8:00 pm","17":"sunday 8:00 pm","18":"sunday 8:00 pm","19":"sunday 8:00 pm","20":"sunday 8:00 pm","21":"sunday 8:00 pm"},"season premiere":{"0":"september 5 , 2001","1":"march 11 , 2002","2":"october 2 , 2002","3":"may 29 , 2003","4":"july 6 , 2004","5":"november 16 , 2004","6":"march 1 , 2005","7":"september 27 , 2005","8":"february 28 , 2006","9":"september 17 , 2006","10":"february 18 , 2007","11":"november 4 , 2007","12":"september 28 , 2008","13":"february 15 , 2009","14":"september 27 , 2009","15":"february 14 , 2010","16":"september 26 , 2010","17":"february 20 , 2011","18":"september 25 , 2011","19":"february 19 , 2012","20":"september 30 , 2012","21":"february 17 , 2013"},"season finale":{"0":"december 13 , 2001","1":"may 15 , 2002","2":"december 18 , 2002","3":"august 21 , 2003","4":"september 21 , 2004","5":"february 8 , 2005","6":"may 10 , 2005","7":"december 13 , 2005","8":"may 17 , 2006","9":"december 10 , 2006","10":"may 6 , 2007","11":"january 20 , 2008","12":"december 7 , 2008","13":"may 10 , 2009","14":"december 6 , 2009","15":"may 9 , 2010","16":"december 12 , 2010","17":"may 8 , 2011","18":"december 11 , 2011","19":"may 6 , 2012","20":"december 9 , 2012","21":"may 5 , 2013"},"tv season":{"0":"2001 - 2002","1":"2001 - 2002","2":"2002","3":"2003","4":"2004","5":"2004 - 2005","6":"2004 - 2005","7":"2005 - 2006","8":"2005 - 2006","9":"2006 - 2007","10":"2006 - 2007","11":"2007 - 2008","12":"2008 - 2009","13":"2008 - 2009","14":"2009 - 2010","15":"2009 - 2010","16":"2010 - 2011","17":"2010 - 2011","18":"2011 - 2012","19":"2011 - 2012","20":"2012 - 2013","21":"2012 - 2013"},"rank":{"0":"73","1":"49","2":"71","3":"n \/ a","4":"n \/ a","5":"31","6":"25","7":"42","8":"56","9":"31","10":"44","11":"25","12":"27","13":"29","14":"28","15":"29","16":"22","17":"39","18":"34","19":"37","20":"29","21":"36"},"viewers (millions)":{"0":8.8,"1":10.3,"2":8.98,"3":8.32,"4":10.73,"5":11.54,"6":13.05,"7":10.8,"8":9.1,"9":11.5,"10":10.1,"11":11.84,"12":11.14,"13":10.91,"14":11.14,"15":10.4,"16":11.93,"17":10.35,"18":11.13,"19":10.3,"20":10.68,"21":10.17}}