The information is presented with a series of colored bands. This is useful for getting a visual image of the whole. Each different colored band represents a different set of emails by data dump (the number of the dump provided in the column of that name ). The DARK ORANGE bands stand out the most - as they represent emails that have yet to be released. This provides a quick visual guide to what is remaining and gaps within a particular sender's set of emails (the emails are listed from the first 00000001.eml to the last in numerical order - which generates a sort based on the first letter recognized from the "From" column - and this is thus listed alphabetically. This can be confusing, however, as while most names are listed with the first letter of the first name some use the first of the last name (i.e. Paul Begala can be found in the "B" set toward the beginning of the list when sorted by file name (number)).
Emails from John Podesta to other senders can be located in the J section beginning with the first known email from him at 00 through the last 00 .
Another factor that can be viewed using the graphic/visual feature of the map is the random distribution of the emails released. This appears to confirm Wikileaks claims that the emails are being released, by and large, in a random selection. Although it appears that some sets of emails or portions thereof may have been intentionally released within the larger random set for that data dump. Further analysis using this map can determine if and when (and thus what sender or emails were included) a more conscious inclusion of a particular set of emails was included in a particular dump or period of time.
Below is a visual representation of the first page of the Map. Open or download the PDF or SPREADSHEET linked above to see the entire Map.
(Note: You can view every article as one long page if you sign up as an Advocate Member, or higher).