[atlas] Graphing packet loss

I've got some ping measurements set up and am trying to find a good way 
to visualise outages.

The Latencymon tool obviously shows red shaded sections on the graphs 
for an outage, but they vanish when zoomed out a long way.  A graph of 
average packet loss seems the obvious way of doing it, but it doesn't 
look like there's any way to get this from the Atlas website, sort of 
downloading the data and building my own tool to analyse it.

Am I missing something obvious? :)

-- 
  - Steve