This shows the data center used to serve content to you (it’s geographically close to you, I think) and the speed from you to the datacenter, at the moment this debug dump was produced.
Are you still seeing slow downloads? The BW measurement would indicate not, but I’d like to confirm either way.
if you’re ever seeing slow downloads, then at that moment you can go to fastly-debug.com and get a data dump such as this one; if the “BW to server” measurement is low, that would explain the slowness. If it’s not low, it might mean our transfer speed to the CDN datacenter is the problem; so having the information either way is quite useful to us.