I will leave this site as an archive, but the data will become stale. Check out Mike's broadcast monitors to replace some of the charts from here.
Instructions: Please wait for the graph to appear. To change to a different channel scroll down to "Change channel: Start:______ End:______" Click on the RF channel box and select the desired RF channel from the list. You can usually leave start and end blank, then click on the "change channel" button, and wait patiently.
During the week of May 22nd, 2016, the antenna has been moved around a bit during roofing work.
Please check out Larry's Channel List for the SF Bay Area for more information about what's being broadcast.
Some more info on how the data is collected. Raw Data