Topic summary
Tropical Albums

Extracted from the Wikipedia article Billboard tropical charts.
Tropical Albums
The Tropical Albums chart was established on the issue dated June 29, 1985. Initially, it was published on a fortnightly basis with its positions being compiled by sales data from Latin retailers and distributors. The methodology for the chart was amended with the effect from the week of July 10, 1993, to have its sales compiled by Nielsen SoundScan, basing it on electronic point of sale data. At the same time, the chart began to be published weekly and became a sub chart of Top Latin Albums (which was established in the same week as the methodology change). Billboard also imposed a linguistic rule requiring an album to have 70% of its content in Spanish (later reduced to 50%) to be eligible to rank on the chart. On January 26, 2017, Billboard updated the Tropical Albums, along with the other genre album charts, to incorporate track equivalent albums (TEA) and streaming equivalent albums (SEA) to match the current Billboard 200 methodology.