The most common form of air pollution in the San Antonio region is. ground-level ozone, a major component of smog. Ground-level. ozone forms readily in the atmosphere during warm, sunny days. Sunlight causes chemicals from the fuels we burn (e.g., gasoline. and diesel) and vapors from such products as gasoline and paint.
Cover Photo Dimensions. The Facebook cover photo area is 851 pixels wide by 315 pixels tall. Photos uploaded for use as a cover photo must be at least 399 pixels wide. Like profile photos, these photos are resized to comply with the cover photo template if they are smaller than the 851 pixel width.
Total number of mobile Facebook users: 1,126,000,000: Increase in Facebook users from 2014 to 2016: 13.2 %: Total number of minutes spent on Facebook each month: 648,000,000: Percent of all Facebook users who log on in any given day: 48 %: Average time spent on Facebook per visit: 18 minutes: Total number of Facebook pages: 78,200,000: Facebook Demographics: Data