Some of the page recordings contain [[https://wiki.mozilla.org/Performance_sheriffing/Raptor/Mitmproxy#Adding_Hero_Elements hero elements]]. When hero elements are measured, the value is the time until the hero element appears on the page (in MS).
All pageload tests can be found at [https://searchfox.org/mozilla-central/source/testing/raptor/raptor/tests/tp6/ raptor-tp6 tests ]
Below are the details for page-load suites: