Discussions

We are researching human mobility and have calculated the visitor rate for each CBG in Erie County using the formula: Visitor Rate = Visitors / Number of Devices.

I noticed data that I thought was missing from the Advan datasets. Heads up if you have the same issue -- the GEO IDs are connected to 2010 Census Block Groups, not 2020. Glad I solved this, hope this helps someone else!

I'm trying to understand the representativeness of Advan data. What percentage of U.S. cellphones does it capture at a given point in time? Does this coverage percentage fluctuate over time, and if so, what factors influence these changes?

Hello,

I am currently downloading the Advan Research data for 2022–2024 and have noticed that many major airports, such as Cleveland Hopkins International Airport and John Glenn Columbus International Airport, lack the data of visits and visitors from home CBGs for the period between December 2022 and December 2024. I would like to inquire about the reason for this missing data. Could you provide any insights into this issue? Thank you very much for your assistance.

Hello,

Hi,

Previsouly, I have been using bucketed_dwell_times ““<5”, “5-10”, “11-20”, “21-60”, “61-120”, “121- 240”, “>240””? In the recent filed I only observe “5-10”, “11-20”, and 61-120", “121-240”, can you please help me learn as the SafeGraph Doc says " * Data delivered from December 2020 onward, including all backfilled historical data, contains the following bins: { “<5”, “5-10”, “11-20”, “21-60”, “61-120”, “121-240”, “>240”} " on the safeGraph document page

Specifically, I have questions about the following columns: visitor_home_cbgs and visitor_daytime_cbgs. I would like to clarify the definitions of the "home city" and "home CBG" fields, as well as understand how these fields are censored.

I’m working with the monthly foot traffic data for the Kansas Metropolitan area, focusing specifically on the variable VISITOR_HOME_CBGS.