ISUmonarch: Monarch butterfly habitat restoration data

#' Survey
#'
#' This data set contains transect lengths in meters, section lengths in meters, meter square area of the plot, and adult monarch survey length of time in minutes.
#' This data occasionally changed between surveys (years/rounds) so data is recorded for every survey (round/year combination) for every site.
#' 
#' @format A data frame with the following variables:
#' \itemize{
#'   \item transectID: character, ID of the transect
#'   \item round: character, round number: 1, 2, or 3
#'   \item length: numeric, length of transect in meters
#'   \item section_length: numeric, length of section within transect in meters. length is 10m or 20m in 2016. length is 10m for all transects 2017-2019.
#'   \item area: numeric, area of plot in meters squared
#'   \item monarch_time: numeric, length of time of adult monarch survey in minutes. time is variables in 2016. time is always 20 minutes for 2017-2019.
#'   \item year: numeric, year of observation
#' }
#' @format A data frame with the variables above.
"survey"