trakman: google says 1.2km, but I have no idea where the actual mothership is on airedale street ;)
check it
google says 5 wakefield street? (http://www.zoomin.co.nz/info/nz/auckland/auckland+central/wakefield+street/5/-airedale+st+exchange/)
i assume lines probably don't go in a straight line around there though. you may want to see what attenuation other people around you have?
if yours is way higher it can mean a wiring problem.
but then it says that you edited it in 2007?