Hi, it certainly is an interesting presentation

You've obviously done a lot research on it, and it's very informative.
However, if you update the file, please edit your original post to replace the original version, in the preview screen you can upload a new version which will replace the old one. This avoids duplicate placemarks in GE. You can add text either in the original post or in a new reply to explain your changes. If you do this now, you can delete the second file by editing the post.
Thanks
