season  ep      season premiere       season finale  ranking viewers (households in millions) rating
0    season 1  24  september 17 , 1972     march 25 , 1973       46                            n / a  n / a
1    season 2  24  september 15 , 1973      march 2 , 1974        4                            17.02   25.7
2    season 3  24  september 10 , 1974     march 18 , 1975        5                            18.76   27.4
3    season 4  24  september 12 , 1975  february 24 , 1976       15                            15.93   22.9
4    season 5  24  september 21 , 1976     march 15 , 1977        4                            18.44   25.9
5    season 6  24  september 20 , 1977     march 27 , 1978        9                            16.91   23.2
6    season 7  25  september 18 , 1978     march 12 , 1979        7                            18.92   25.4
7    season 8  25  september 17 , 1979     march 24 , 1980        5                            19.30   25.3
8    season 9  20   november 17 , 1980        may 4 , 1981        4                            20.53   25.7
9   season 10  21    october 26 , 1981     april 12 , 1982        9                            18.17   22.3
10  season 11  16    october 25 , 1982  february 28 , 1983        3                            18.82   22.6

Table as JSON:
{"season":{"0":"season 1","1":"season 2","2":"season 3","3":"season 4","4":"season 5","5":"season 6","6":"season 7","7":"season 8","8":"season 9","9":"season 10","10":"season 11"},"ep":{"0":24,"1":24,"2":24,"3":24,"4":24,"5":24,"6":25,"7":25,"8":20,"9":21,"10":16},"season premiere":{"0":"september 17 , 1972","1":"september 15 , 1973","2":"september 10 , 1974","3":"september 12 , 1975","4":"september 21 , 1976","5":"september 20 , 1977","6":"september 18 , 1978","7":"september 17 , 1979","8":"november 17 , 1980","9":"october 26 , 1981","10":"october 25 , 1982"},"season finale":{"0":"march 25 , 1973","1":"march 2 , 1974","2":"march 18 , 1975","3":"february 24 , 1976","4":"march 15 , 1977","5":"march 27 , 1978","6":"march 12 , 1979","7":"march 24 , 1980","8":"may 4 , 1981","9":"april 12 , 1982","10":"february 28 , 1983"},"ranking":{"0":46,"1":4,"2":5,"3":15,"4":4,"5":9,"6":7,"7":5,"8":4,"9":9,"10":3},"viewers (households in millions)":{"0":"n \/ a","1":"17.02","2":"18.76","3":"15.93","4":"18.44","5":"16.91","6":"18.92","7":"19.30","8":"20.53","9":"18.17","10":"18.82"},"rating":{"0":"n \/ a","1":"25.7","2":"27.4","3":"22.9","4":"25.9","5":"23.2","6":"25.4","7":"25.3","8":"25.7","9":"22.3","10":"22.6"}}