This page describes the field names available for Analytics Browser Browser Core Web Vitals Records data, along with the Events Service internal name. When accessing the data using ADQL queries, you need to use the Events Service internal name. 

Event Type: browser_core_web_vitals_record

Key (event type identifier): appkey

UI Field NameEvents Service Internal Name
Session Fields
Agent IDagentid
App Keyappkey
Browserbrowser
Browser Versionbrowserversion
Citygeocity
CLS RatingclsRating
Countrygeocountry
Cumulative Layout ShiftclsValue
Devicedevice
Device OSdeviceos
FID RatingfidRating
First Input Display (ms)fidValue
IP Addressip
Largest Contentful Paint (sec)lcpValue
LCP RatinglcpRating
Page Namepagename
Page URLpageurl
Regiongeoregion
Timestamptimestamp