User Time measurement for Google Analytics.
https://developers.google.com/analytics/devguides/collection/analyticsjs/user-timings
Analytics and Tracking
Get access to data on 27,790 websites that are Google Analytics Timings Customers. We know of 1,295 live websites using Google Analytics Timings and an additional 26,495 sites that used Google Analytics Timings historically and 351 websites in the United States.
Get a list of 27,790 websites using Google Analytics Timings which includes location information, hosting data, contact details, 1,295 currently live websites and an additional 2,446 domains that redirect to sites in this list. 26,495 sites that used this technology previouslyand 351 websites in the United States currently using Google Analytics Timings.
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