User Time measurement for Google Analytics.
https://developers.google.com/analytics/devguides/collection/analyticsjs/user-timings
Analytics and Tracking
Get access to data on 28,318 websites Google Analytics Timings Customers. We know of 1,486 live websites using Google Analytics Timings and an additional 26,832 sites that used Google Analytics Timings historically and 425 websites in the United States.
Get a list of 28,318 websites using Google Analytics Timings which includes location information, hosting data, contact details, 1,486 currently live websites and an additional 2,263 domains that redirect to sites in this list. 26,832 sites that used this technology previouslyand 425 websites in the United States currently using Google Analytics Timings.
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