what is the total number of times bryan field was the sole color commentator?
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col : year | network | race caller | color commentator | reporters | trophy presentation row 1 : 1959 | cbs | fred capossela | bryan field and chris schenkel |  | chris schenkel row 2 : 1958 | cbs | fred capossela | bryan field |  |  row 3 : 1957 | cbs | fred capossela | bryan field |  |  row 4 : 1956 | cbs | fred capossela | bryan field |  |  row 5 : 1955 | cbs | fred capossela | phil sutterfield and win elliot |  |  row 6 : 1954 | cbs | bryan field | mel allen |  | bill corum row 7 : 1953 | cbs | bryan field | mel allen | phil sutterfield | phil sutterfield row 8 : 1952 | cbs | bryan field | sam renick |  |
what is the total number of times bryan field was the sole color commentator?
Year Network Race caller Color commentator Reporters Trophy Presentation
1959 CBS Fred Capossela Bryan Field and Chris Schenkel Chris Schenkel
1958 CBS Fred Capossela Bryan Field
1957 CBS Fred Capossela Bryan Field
1956 CBS Fred Capossela Bryan Field
1955 CBS Fred Capossela Phil Sutterfield and Win Elliot
1954 CBS Bryan Field Mel Allen Bill Corum
1953 CBS Bryan Field Mel Allen Phil Sutterfield Phil Sutterfield
1952 CBS Bryan Field Sam Renick
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