You can either click on the desired region on the map or on its entry in the table. After downloading then running the file, it will create the San Francisco Bay Area Zone if it doesn't exist and install the selected region.

SAN FRANCISCO BAY AREA ZONE

SAN FRANCISCO BAY AREA ZONE

Region	Windows Setup	Source
Peninsula - Half Moon Bay to Santa Cruz	setup_peninsula.exe (6.2 mb)	peninsula.zip (5.9 mb)
East Bay - Richmond to Livermore	setup_eastbay.exe (6.6 mb)	eastbay.zip (6.3 mb)
Marin - Tomales to the Golden Gate Bridge	setup_marin.exe (5.7 mb)	marin.zip (5.4 mb)
San Francisco - San Francisco to Half Moon Bay	setup_sanfrancisco.exe (3.5 mb)	sanfrancisco.zip (3.3 mb)
Delta - Rio Vista to Patterson	setup_delta.exe (6.1 mb)	delta.zip (5.8 mb)
North Bay - Rio Vista to San Rafael	setup_northbay.exe (5.1 mb)	northbay.zip (4.8 mb)
South Bay - Fremont to Gilroy	setup_southbay.exe (8.4 mb)	southbay.zip (8.1 mb)