How often are these magnetic maps updated, and what sort of coverage globally do we have? Like is this something that an agency could map at once a year and maintain a reliable enough accuracy, or are there small fluctuations all the time that can reduce accuracy? Moreover, would you be able to calculate an error boundary for any given reading?
How often are these magnetic maps updated, and what sort of coverage globally do we have? Like is this something that an agency could map at once a year and maintain a reliable enough accuracy, or are there small fluctuations all the time that can reduce accuracy? Moreover, would you be able to calculate an error boundary for any given reading?