User Time measurement for Google Analytics.
https://developers.google.com/analytics/devguides/collection/analyticsjs/user-timings
Analytics and Tracking
Get access to data on 27,445 websites that are Google Analytics Timings Customers. We know of 1,296 live websites using Google Analytics Timings and an additional 26,149 sites that used Google Analytics Timings historically and 356 websites in the United States.
Get a list of 27,445 websites using Google Analytics Timings which includes location information, hosting data, contact details, 1,296 currently live websites and an additional 2,423 domains that redirect to sites in this list. 26,149 sites that used this technology previouslyand 356 websites in the United States currently using Google Analytics Timings.
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