Typical of many first season episodes, and contrary to nearly a half-decade of folklore, Star Trek did exceptionally well in the ratings. Here is the A.C. Nielsen report for this broadcast of "Balance of Terror."

RATINGS / Nielsen National report for Thursday, August 3, 1967:

8:30 - 9 p.m., with 42% of U.S. TVs in use.   Share:     Households:
NBC:      Star Trek (first half)                          32.0%      10,650,000
ABC:      Bewitched                                        29.7%        8,620,000
CBS:      My Three Sons                                24.7%        7,300,000             

9 - 9:30 p.m., with 47.5% of U.S. TVs in use. Share:    Households:
NBC:     Star Trek (second half)                     31.6%         No data
ABC:      That Girl                                           27.5%         No data
CBS:      Thursday Night Movie                      33.1%         No data
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