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National Center for Chronic Disease Prevention and Health Promotion Behavioral Risk Factor Surveillance System BRFSS Home | Contact Us |
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2004 Air Quality System Overview document
Please read this document before performing any data analyses.
Provides information on the Air Quality System (AQS), Air Quality Index (AQI), data limitations, variables for analyses, and statistical and analytical issues.
563KB 2004 Metropolitan Area Prevalence Tables
Web page 2004 Metropolitan Area Data Weighting Methodology
Provides information on the background, design, data collection and processing, and statistical and analytical issues.
214K Annual Summary of Particulate Matter (PM2.5) AQI Values for Selected Metropolitan Areas, 2004
151K Annual Summary of Particulate Matter (PM10) AQI Values for Selected Metropolitan Areas, 2004
140K Annual Summary of Sulfur Dioxide (SO2) AQI Values for Selected Metropolitan Areas, 2004
151K Annual Summary of Carbon Monoxide (CO) AQI Values for Selected Metropolitan Areas, 2004
132K Annual Summary of Ozone (O3) AQI Values for Selected Metropolitan Areas, 2004
149K Annual Summary of Daily AQI Values for Selected Metropolitan Areas, 2004
173K
The data files are provided in ASCII and SAS Transport formats. There are 115,716 records for 2004.
2004 Air Quality System Summary Data
34K Variable Layout for 2004 Air Quality System Summary
10K 2004 Metropolitan Area Data (ASCII)
Data released April 30, 2008This file is in ASCII format. It has a fixed record length of 985 positions.
9MB
Variable Layout for 2004 Metropolitan Area Data
Format information on variable name by column position for Metropolitan Area Data.
166K 2004 Metropolitan Area Data (SAS Transport Format)
Data released April 30, 2008This file was exported from SAS V8.2 in the XPT transport format. This file contains 288 variables. This format can be imported into SPSS or STATA. Please note: Some of the variable labels get truncated in the process of converting to the XPT format so they may be slightly different from what is on the PMSA_SASOUT04.SAS program.
18MB
PMSA_sasout04
SAS for Windows program to convert the ASCII file into a SAS dataset.
28K
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