When it comes to TV ads, many consumers—and doctors—claim no one wants to see them. But the actual data show few people click away when the ads run.

Data collected by realtime TV ad tracker iSpot.tv analysts shows that, for the month of July, the top 10 pharma TV ad spenders all notched 94% or higher average view rates for the month. That means on average, the ads are watched at least 94% of the way through before someone changes the channel, turns off the TV or brings up the channel guide.

That’s high for TV advertising—most commercials across all categories chart between 75% and 95%, iSpot said.

So what’s keeping viewers tuned in to pharma ads? That’s hard to say exactly, but it does have something to do with the programming where ads run. News shows, for example, tend to score high watch-through rates. More simply, viewers might just be interested enough in the message to stay on channel—or not irritated enough to switch, anyway.

For comparison, iSpot pulled the average view rate in July for erectile dysfunction drug Cialis—the most vilified category of pharma ads—and found those ads were watched on average 90.2% of the way through. We asked for Viagra, but that Pfizer brand facing patent drop-off hasn’t been on air since May 15.

Among the top 10 pharma spenders for July, the highest average view rates were Breo at 98.9%, Xeljanz with 98.7% and Taltz at 98.6%. Even AbbVie’s Humira, the top ad spender month after month, logged an above average 96.4% viewer rate across ads for all three indications for which it buys TV time.

In overall national TV ad spending, the top 10 from iSpot's data dropped a combined $132 million for July, rebounding from June's $115 million top 10 total, which was the lowest-spending month for the year so far.