topo.csv
--------
boxid,deployTS,removeTS,UTMEast,UTMNorth,z,lat,lon

CHill_Link.txt
--------------
unixts,box1,box2,lqi,rssi

CHill_Download.txt
------------------
unixts,path


Information
-----------
* Box with id 1 is the BaseStation.
* Download paths are in reverse order
  - Example : 1 3 5 implies the path is 5 -> 3 -> 1
* topo.csv contains the topology. UTM's are in meters.
  - So (UTMEast,UTMNorth) are 2-d cartesian. basically, (x,y)
* Note that 1 (and others) have a removeTS of 2010-1-30(still active)
* Some boxes may appear twice because they were repaired
  in the lab, and they replaced other non-functioning boxes
  - so some boxes have multiple entries with different location
    and non-overlapping periods of operation.
* One needs to correlate unixts in CHill_link.txt and CHill_Download files
  with the active period of the box.