Time to First Fetch

A direct read on how closely a property is being watched. It shortens as a property establishes itself and lengthens when interest fades.

Measures
Elapsed time between a URL first being published and its first classified crawler request, per URL and as a distribution.
Data Source
Raw server request logs against publication timestamps from the content records.
Indicates
Crawl priority. A property fetched within hours is being treated differently from one fetched in a fortnight.
What Moves It
Publishing cadence, sitemap updates, internal links from frequently crawled pages, and overall property standing.
Does Not Prove
Indexing speed. Fetched and indexed are different events, and the gap between them can be long.
Status
Measured, and one of the more interesting things to watch on a brand new domain.

This is the signal I expect to be most informative during this property's first ninety days, because it starts at an unknown and has nowhere to hide. Whatever it does gets published.