1. openairmaps::polar_data
    Example data for polar mapping functions
    csv| xlsx| json| ndjson| rda| rds
    tbl_df|35040 x 13
  2. openairmaps::traj_data
    Example data for trajectory mapping functions
    csv| xlsx| json| ndjson| rda| rds
    tbl_df|5432 x 17