archive_fetch_measurements
                        fetch measurements from archive from a single
                        box, and a single sensor
filter.osem_measurements
                        Return rows with matching conditions, while
                        maintaining class & attributes
filter.sensebox         Return rows with matching conditions, while
                        maintaining class & attributes
mutate.osem_measurements
                        Add new variables to the data, while
                        maintaining class & attributes
mutate.sensebox         Add new variables to the data, while
                        maintaining class & attributes
opensensmapr            opensensmapr: Get sensor data from
                        opensensemap.org
osem_archive_endpoint   Returns the default endpoint for the archive
                        *download* While the front end domain is
                        archive.opensensemap.org, file downloads are
                        provided via sciebo.
osem_as_measurements    Converts a foreign object to an
                        osem_measurements data.frame.
osem_as_sensebox        Converts a foreign object to a sensebox
                        data.frame.
osem_box                Get a single senseBox by its ID
osem_box_to_archivename
                        replace chars in box name according to archive
                        script:
                        https://github.com/sensebox/osem-archiver/blob/612e14b/helpers.sh#L66
osem_boxes              Get a set of senseBoxes from the openSenseMap
osem_clear_cache        Purge cached responses from the given cache
                        directory
osem_counts             Get count statistics of the openSenseMap
                        Instance
osem_endpoint           Get the default openSenseMap API endpoint
osem_ensure_api_available
                        Check if the given openSenseMap API endpoint is
                        available
osem_ensure_archive_available
                        Check if the given openSenseMap archive
                        endpoint is available
osem_measurements       Fetch the Measurements of a Phenomenon on
                        opensensemap.org
osem_measurements_archive
                        Fetch day-wise measurements for a single box
                        from the openSenseMap archive.
osem_phenomena          Get the counts of sensors for each observed
                        phenomenon.
st_as_sf.osem_measurements
                        Convert a 'osem_measurements' dataframe to an
                        'st_sf' object.
st_as_sf.sensebox       Convert a 'sensebox' dataframe to an 'st_sf'
                        object.
