Google still reigns supreme in the U.S. online video market, according to new data released Thursday by comScore. There were more than 5.0 billion U.S. internet video viewing sessions during the month of February, and 1.8 billion of them were on Google sites — which includes YouTube. Google was followed by Microsoft’s sites (48.8 million unique viewers and a total of 297 million viewing sessions), Yahoo! Sites (46.7 unique viewers and a total of 200 million total viewing sessions), Facebook.com (46.6 millon unique, 170 million total), and the music video site VEVO (45.9 million unique, 222 million total). Across the entire internet, viewers watched an average of 816 minutes of video each, 261 minutes of which were on Google’s sites. comScore also said that video ads reached 42% of Americans with U.S. citizens watching a total of 3.8 billion video ads in February. Hulu served the most impressions reaching 7.8% of the total U.S. population with 1.1 billion ads viewed.