MOE for Migration Data

Hello,

I am a bit confused on the county-county migration MOE's, specifically for the geographical mobility estimates for each county. The documentation just says this:

"the files also contain additional geographical mobility estimates for each county, along with the margin of error (MOE) at the 90 percent confidence level."

And, I'm just not entirely sure what I'm looking at with the csv files for county-county flows. Is the estimate the "best guess" and the MOE the possible range? I.e., is the actual number somewhere between the Estimate - MOE and the Estimate + MOE. If so, what are best practices for using it to understand flows when so many of the MOE's are very close to the value of the estimates? 

Thanks!