What an Echoeboard line actually counts.
Every row on an Echoeboard chart is a number. Every number is a count. This is what the count includes, what it excludes, and why the same number on a different chart can mean two different things.
4 min
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Echoeboard
Charts that can prove themselves.
Echoeboard — 101 chart types, 6 continents, one engine.
Every number on Echoeboard traces back to a time-stamped detection, a station, and a minute of listening. The chart engine is open.
3 min