 Nielsen was not the only company to report TV ratings , however . Companies such as Trendex , Videodex and Arbitron had also measured TV viewership . The adjacent chart comes from Videodex 's August 1950 ratings breakdown , as reported in Billboard magazine . 
 Nielsen <a href='negative_concord' title='1'><mark>was</mark></a> <a href='negative_concord' title='2'><mark>not</mark></a>the only company to report TV ratings , however . Companies such as Trendex , Videodex and Arbitron <a href='been_done' title='3'><mark>had</mark></a> also measured TV viewership . The adjacent chart <a href='uninflect' title='4'><mark>comes</mark></a> from Videodex <a href='null_genetive' title='5'><mark>'s</mark></a>August 1950 ratings breakdown , as reported in Billboard magazine . 
Nielsen ain't da only company to report TV ratings , however . Companies such as Trendex , Videodex and Arbitron done also measured TV viewership . The adjacent chart come from Videodex  August 1950 ratings breakdown , as reported in Billboard magazine .