||1968 data tabulations and summaries : continuous air monitoring projects, national air surveillance networks : Denver
||National Air Pollution Control Administration, Raleigh, N.C. Div. of Air Quality and Emission Data.
||U.S. Dept. of Health, Education, and Welfare, Public Health Service, Consumer Protection and Environmental Health Service, National Air Pollution Control Administration, Division of Air Quality and Emission Data,
||APTD 69-17 ; PB 194-760
( Air pollution ;
Urban areas) ;
Continuous sampling ;
Diurnal variations ;
Carbon dioxide ;
Nitrogen oxide(NO) ;
Nitrogen dioxide ;
Sulfur dioxide ;
Air pollution detection ;
Continuous air monitoring projects ;
||Research Triangle Park Library/RTP, NC
||Some EPA libraries have a fiche copy filed under the call number shown.
||v, 103 p. : ill. ; 26 cm.
Hourly average concentrations of six gaseous pollutants (carbon monoxide, nitric oxide, nitrogen dioxide, sulfur dioxide, total hydrocarbons, and total oxidants), and 2-hour measurements of soiling index levels are tabulated. A brief summary of monthly means and maximums' and graphs of seasonal diurnal patterns of gaseous pollutants are included. Annual frequency distributions of the data pertaining to gases and soiling index are tabulated for Denver. (Author)