Methodology

How Elenra guides are researched, written and kept current.

Sources

Every factual statement points to a source: official statistics, regulators, published research or the provider's own documentation. Each source carries the date it was retrieved.

Dates and reviews

Every guide shows when it was published and when it was last checked. When the underlying figures change, the guide is reviewed and re-dated.

Comparisons

Where products or providers are compared, the same criteria apply to all of them. A dash in a table means the provider does not publish that figure.

Corrections

Errors are corrected in the guide and the correction is noted. Send corrections to info@elenra.com.