| pm25_2011_durham | R Documentation |
Air quality for Durham, NC
Description
Daily air quality is measured by the air quality index (AQI) reported by the Environmental Protection Agency in 2011.
Usage
pm25_2011_durham
Format
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 ConditionsandAcceptable 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
Source
US Environmental Protection Agency, AirData, 2011. http://www3.epa.gov/airdata/ad_data_daily.html
Examples
library(ggplot2)
ggplot(pm25_2011_durham, aes(x = date, y = daily_mean_pm2_5_concentration, group = 1)) +
geom_line()