Time In A Bottle Chart-Gavin Report-October 9th, 1970

https://docs.google.com/spreadsheets/d/e/2PACX-1vQ2tzh6koXi20gBmYTVau0vnMyA9wOlAAVDlS3FEG1Tan0YDqmu1Pny-Ui2ysuZf5CQY0mOGHXU-mNF/pubhtml?gid=767317576&single=true

In the late 1960s and early 1970s, the Gavin Report worked somewhat differently from a conventional sales chart like Billboard.

• The Top 20 was the main chart. These were the records receiving the strongest overall airplay and programmer support from Gavin's reporting radio stations.
• "Gaining In Several Markets" was essentially a breakout or "next up" section. These records had not yet accumulated enough nationwide airplay to make the Top 20, but they were showing significant increases in spins, requests, or chart action in a number of reporting markets.

Think of it this way:

Category	Meaning
Top 20	Established national hits
Gaining In Several Markets	Emerging records with growing momentum

A song could spend several weeks in "Gaining In Several Markets" before entering the Top 20. Radio programmers closely watched that section because it often identified future hits before they became obvious nationally.