rnd         date                           race name length                               track                  location pole position winning driver
0     1  february 28             rafaela indy 300 heat 1      -                autódromo de rafaela       rafaela , argentina    lloyd ruby       al unser
1     2  february 28             rafaela indy 300 heat 2      -                autódromo de rafaela       rafaela , argentina      al unser       al unser
2     3     march 27                         phoenix 150      -       phoenix international raceway        avondale , arizona   bobby unser       al unser
3     4     april 25                         trenton 200      -      trenton international speedway      trenton , new jersey   bobby unser    mike mosley
4     5       may 29  international 500 mile sweepstakes      -         indianapolis motor speedway        speedway , indiana  peter revson       al unser
5     6       june 6                rex mays classic 150      -  wisconsin state fair park speedway    west allis , wisconsin   bobby unser       al unser
6     7       july 3                          pocono 500      -        pocono international raceway  long pond , pennsylvania  mark donohue   mark donohue
7     8      july 18                        michigan 200      -     michigan international speedway       brooklyn , michigan   bobby unser   mark donohue
8     9    august 15               tony bettenhausen 200      -  wisconsin state fair park speedway    west allis , wisconsin   bobby unser    bobby unser
9    10  september 5                      california 500      -              ontario motor speedway      ontario , california  mark donohue    joe leonard
10   11    october 3                         trenton 300      -      trenton international speedway      trenton , new jersey   bobby unser    bobby unser

Table as JSON:
{"rnd":{"0":1,"1":2,"2":3,"3":4,"4":5,"5":6,"6":7,"7":8,"8":9,"9":10,"10":11},"date":{"0":"february 28","1":"february 28","2":"march 27","3":"april 25","4":"may 29","5":"june 6","6":"july 3","7":"july 18","8":"august 15","9":"september 5","10":"october 3"},"race name":{"0":"rafaela indy 300 heat 1","1":"rafaela indy 300 heat 2","2":"phoenix 150","3":"trenton 200","4":"international 500 mile sweepstakes","5":"rex mays classic 150","6":"pocono 500","7":"michigan 200","8":"tony bettenhausen 200","9":"california 500","10":"trenton 300"},"length":{"0":"-","1":"-","2":"-","3":"-","4":"-","5":"-","6":"-","7":"-","8":"-","9":"-","10":"-"},"track":{"0":"autódromo de rafaela","1":"autódromo de rafaela","2":"phoenix international raceway","3":"trenton international speedway","4":"indianapolis motor speedway","5":"wisconsin state fair park speedway","6":"pocono international raceway","7":"michigan international speedway","8":"wisconsin state fair park speedway","9":"ontario motor speedway","10":"trenton international speedway"},"location":{"0":"rafaela , argentina","1":"rafaela , argentina","2":"avondale , arizona","3":"trenton , new jersey","4":"speedway , indiana","5":"west allis , wisconsin","6":"long pond , pennsylvania","7":"brooklyn , michigan","8":"west allis , wisconsin","9":"ontario , california","10":"trenton , new jersey"},"pole position":{"0":"lloyd ruby","1":"al unser","2":"bobby unser","3":"bobby unser","4":"peter revson","5":"bobby unser","6":"mark donohue","7":"bobby unser","8":"bobby unser","9":"mark donohue","10":"bobby unser"},"winning driver":{"0":"al unser","1":"al unser","2":"al unser","3":"mike mosley","4":"al unser","5":"al unser","6":"mark donohue","7":"mark donohue","8":"bobby unser","9":"joe leonard","10":"bobby unser"}}