The amount spent on US television ads fell by more than half on September 11, as many advertisers and broadcasters chose to avoid marketing messages on the first anniversary of the attacks on New York and Washington.

According to adspend research group CMR, $57.8 million (€59.2m; £37.4m) was spent on ads on that day, 54.6% down on the previous five days’ average of $127.5m.

Network and spot TV saw some of the biggest advertising falls, with respective drops of 57.3% and 57%, while cable ads sank 45.8%.

The number of available ad spots fell by 42.1%, as many stations chose not to insert commercial breaks into memorial services. Many ran public service announcements instead, pushing the number of such messages 122.1% above normal.

Data sourced from:; additional content by WARC staff