Clean Air Status and Trends Network (CASTNET): Ozone

Dataset Summary

Agency:	Environmental Protection Agency
Sub-Agency:
Category:	Geography and Environment
Date Released:	4/1/1987
Date Updated:	5/5/2009
Time Period:	8-hour maximum over a single day
Frequency:	Daily, for each operating day of each station
Description:	8-hour daily maximum ozone concentrations as measured by the Clean Air Status and Trends Network (CASTNET)

Dataset Ratings

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Dataset Information

Data.gov Data Category Type	Raw Data Catalog
Specialized Data Category Designation	Administrative
Keywords	Ozone, Air Quality, Air Pollution, EPA, public health, environment, federal data download, clean air trends, monitoring air, federal datasets, ozone concentration, oxygen, respiratory
Unique ID	8

Contributing Agency Information

Citation	CASTNET ozone 8-hour daily maximum
Agency Program Page	CASTNET
Agency Data Series Page	http://www.epa.gov/castnet/data.html

Dataset Coverage

Unit of Analysis	An air quality sampling station
Granularity	Coordinate Pair (latitude / longitude)
Geographic Coverage	United States

Data Description

Collection Mode	Other
Data Collection Instrument	http://www.epa.gov/castnet/docs.html
Data Dictionary/Variable List	Included with data download

Additional Dataset Documentation

Technical Documentation	http://www.epa.gov/castnet/docs.html
Additional Metadata	Included with data download

OMB Control No. 3090-0284