http://www.scientificamerican.com/blog/post.cfm?id=are-babies-dying-in-the-pacific-nor-2011-06-21 http://www.scientificamerican.com/blog/post.cfm?id=are-babie..

http://www.scientificamerican.com/blog/post.cfm?id=are-babies-dying-in-the-pacific-nor-2011-06-21 http://www.scientificamerican.com/blog/post.cfm?id=are-babie... This person thinks they provide a distorted picture. Probably a good pass using all west coast cities and a more complete time span would be the best indicator.