GLOVIZ
Two sources, one signal

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GLOVIZ picked Earthquakes per day (M4.5+) from USGS Earthquake Hazards Program and Earthquakes per day, Asia & Oceania from USGS Earthquake Hazards Program: two institutions, two measurement programmes, one signal. The pair qualifies because the changes move together, not just the trends, with r = 0.806 over 91 matched observations. Coincidences are filtered on the correlation board.

Earthquakes per day (M4.5+) and Earthquakes per day, Asia & OceaniaUSGS Earthquake Hazards Program against USGS Earthquake Hazards Program · Insights opens on load
Sources: USGS Earthquake Hazards Program, USGS Earthquake Hazards Program
The same two, plotted against each other91 matched points · trend line open
Sources: USGS Earthquake Hazards Program, USGS Earthquake Hazards Program