too late to edit my comment but an interesting analysis which does consider the quadrants: http://zodiackillersolved.blogspot.com/2008/12/340-cipher-solution.ht

too late to edit my comment but an interesting analysis which does consider the quadrants: http://zodiackillersolved.blogspot.com/2008/12/340-cipher-solution.html http://zodiackillersolved.blogspot.com/2008/12/340-cipher-so...