Congestion is defined as a condition where the average speed drops below 35 mph for 15 minutes or more on a typical weekday. The Index is based on the median price of a home sold in each region. The 1996 figure is the average of the first three quarters. Apartment data from surveys conducted by Realfacts of all apartment complexes in the county of 40 or more units. Excluded are subsidized housing, Section 8 or HUD housing, and senior complexes.
Rental rates are the average of all types of units.
Rates are the prices charged to new residents when apartments turn over. Silicon Valley dataset created by Collaborative Economics. The Bay Area Air Quality Management District takes daily measurements of air quality monitoring stations throughout Silicon Valley. The indicator reflects the number of days that at least one of these stations exceeds the federal or state standards. In the past, the TRI list included 316 chemicals and 20 broad chemical categories.