
Nielsen says a software glitch resulted in some TV ratings being attributed incorrectly among broadcast and syndication programming since March.
But the TV measurement service added
that 98% to 99% of ratings would not be affected by more than .05 of a ratings point.
Cable networks and local programming were unaffected.
Recently, some
analysts have speculated that ABC’s ratings were apparently given more viewership than other outlets during the opening two weeks of the new 2014-2015 TV season -- especially when it came to
increases coming with final live-plus-same-day program rating.
Nielsen executives declined to specify any networks that were affected. Nielsen said the technical
error was discovered Oct.6, revealing the erroneous data that stemmed from March 2.
Nielsen has yet to release its first wave of C3 ratings -- the average commercial
ratings plus three days of time-shifted viewing data that the majority of TV advertisers used as a measure in guaranteeing their media deals with national TV networks.
"Watching TV" photo from Shutterstock.
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