A sample dataset containing observation of alcidae made in the Eastern Canada Seabirds At Sea (ECSAS) program.
A data frame with 1670 observations on the following 14 variables.
unique cruise ID.
unique watch ID.
Categorical variable identifying the different observers.
date of the watch.
start time of the watch.
end time of the watch.
latitude at start of the watch, decimal degrees.
longitude at start of the watch, decimal degrees.
distance travelled during the watch in kilometers (estimated from platform speed and observation length since many watches don't have start and end positions).
four letter code of the species.
Classes of distances for the observations. A=0-50m, B=50-100m, C=100-200m, D=200-300m.
number of individuals.
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