User Time measurement for Google Analytics.
https://developers.google.com/analytics/devguides/collection/analyticsjs/user-timings
Analytics and Tracking
Get access to data on 27,756 websites that are Google Analytics Timings Customers. We know of 1,277 live websites using Google Analytics Timings and an additional 26,479 sites that used Google Analytics Timings historically and 349 websites in the United States.
Get a list of 27,756 websites using Google Analytics Timings which includes location information, hosting data, contact details, 1,277 currently live websites and an additional 2,380 domains that redirect to sites in this list. 26,479 sites that used this technology previouslyand 349 websites in the United States currently using Google Analytics Timings.
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