[PawgerZ]

Just to let you know, that wasn't the original commentor, so it could stil involve scrpaing (which is what I expected, too).

[andiareso]

I would guess using Google's Places API. They have busy time reports and hours that are most likely updated by the business owner. No scraping needed

[kridsdale1]

Busy Time is actually not available to the places API. It’s one of the top request features though. There’s a legal/PII dimension to the issue.

Open Hours though are easy to read from the json response.

[darkwater]

Not a Googler but I would expect busy hours graph being generated by Android Location Services data.