5.1 | Imdb:

: Connecting immigration records to tax files (T1FF) and Non-permanent Resident Files (NRF).

In the context of the Canadian Longitudinal Immigration Database (IMDB) Technical Report , section specifically details Data Processing . IMDB: 5.1

For the global film database, a 5.1 rating places a title in a specific reception category often described as "forgettable" or "borderline watchable." Livin' Large! (1991) - IMDb : Connecting immigration records to tax files (T1FF)