Air quality for Durham, NC — pm25_2011

Daily air quality is measured by the air quality index (AQI) reported by the Environmental Protection Agency in 2011.

Usage

pm25_2011_durham

A data frame with 449 observations on the following 20 variables.

date: Date
aqs_site_id: The numeric site ID.
poc: A numeric vector, the Parameter Occurance Code.
daily_mean_pm2_5_concentration: A numeric vector with the average daily concentration of fine particulates, or particulate matter 2.5.
units: A character vector with value ug/m3 LC.
daily_aqi_value: A numeric vector with the daily air quality index.
daily_obs_count: A numeric vector.
percent_complete: A numeric vector.
aqs_parameter_code: A numeric vector.
aqs_parameter_desc: A factor with levels PM2.5 - Local Conditions and Acceptable PM2.5 AQI & Speciation Mass.
cbsa_code: A numeric vector.
cbsa_name: A character vector with value Durham, NC.
state_code: A numeric vector.
state: A character vector with value North Carolina.
county_code: A numeric vector.
county: A character vector with value Durham.
site_latitude: A numeric vector of the latitude.
site_longitude: A numeric vector of the longitude.
csa_code: a numeric vector
csa_name: a factor with levels Raleigh-Durham-Cary, NC

US Environmental Protection Agency, AirData, 2011. http://www3.epa.gov/airdata/ad_data_daily.html


library(ggplot2)

ggplot(pm25_2011_durham, aes(x = date, y = daily_mean_pm2_5_concentration, group = 1)) +
  geom_line()