Subject: 49th parallel and Canada/USA border
Newsgroups: sci.geo.satellite-nav,alt.satellite.gps
Date: Fri, 12 Nov 2004 17:11:34 -0800

For anyone interested in the relationship of the 49th parallel
with the border between Canada and the USA, I've added a bit
more info to the 'Notes' section of the Canada page on the
Degree Confluence Project website:
http://www.confluence.org/country.php?id=3#NOTES

That part of the page explains a bit about how the 49th parallel
is not what defines the Canada/USA border. It includes an image
that illustrates this, and I've just added 'a few stats':
* The average monument location is 3 seconds north or south of
  49 degrees, which is approximately 90 meters.
* The average of all the monument locations, both north and south
  of 49 degrees, results in an average location of less than 1 second
  south of 49 degrees, which is less than 30 meters.
* The monuments that are the farthest north are Monuments 35, 36, and 37,
  at 49 degrees 0 minutes 8.8 seconds North, and are located in British
  Columbia, just southeast of the Abbotsford airport.
* The monument that is the farthest south is Monument 347, at
  49 degrees 59 minutes 48 seconds North, which is located in Alberta,
  to the east of Coutts.

P.S.
There was recent discussion of this topic, in a thread in
alt.satellite.gps about continental drift, but some of the
assertions made about the border were incorrect.