ev-trawl: Extreme Value Trawls

#' Hourly measurements of 6 air pollutant concentrations in Bloomsbury, London,
#' UK.
#'
#' A dataset containing the concentration of 6 pollutants in Bloomsbury, London,
#' UK with hourly measurements from 1st January 2000 to 3st December 2017.
#' Courtesy of King's College Air Pollution monitoring network. Values expressed
#' in micrograms per cubic meter.
#'
#' @docType data
#' @usage data(hourly_bloomsbury_air_pollution_2000_2017)
#' @format A data frame with 157710 rows and 9 variables: \describe{
#'   \item{index}{index of entry} \item{date}{date of entry in format
#'   dd/mm/yyyy} \item{time}{time of day of entry in format HH:MM}
#'   \item{O3}{concentration in Ozone, in mu g / m^3} \item{CO}{concentration in
#'   Carbone Monoxide, in mu g / m^3} \item{NO}{concentration in Nitrogen Oxide,
#'   in mu g / m^3} \item{NO2}{concentration in Nitrogen Dioxyde, in mu g / m^3}
#'   \item{PM10}{concentration in particulate matter 10 micrometers or less in
#'   diameter, in mu g / m^3} \item{SO2}{concentration in Sulfur Dioxide, in mu
#'   g / m^3}}
#' @source \url{https://www.londonair.org.uk/} data selection tool.
#' @keywords datasets
#' @examples
#' data(hourly_bloomsbury_air_pollution_2000_2017)
#' \donttest{plot(hourly_bloomsbury_air_pollution_2000_2017$O3)}
"hourly_bloomsbury_air_pollution_2000_2017"