The stations list is downloaded from the url stored in the option
weathercan.urls.stations. To change this location use
options(weathercan.urls.stations = "your_new_url").
The list of which stations have climate normals is downloaded from the url
stored in the option weathercan.urls.stations.normals. To change this
location use options(weathercan.urls.normals = "your_new_url").
Currently there are two sets of climate normals available: 1981-2010 and
1971-2000. Whether a station has climate normals for a given year range is
specified in normals_1981_2010 and normals_1971_2000, respectively.
The column normals represents the most current year range of climate
normals (i.e. currently 1981-2010)