If you're going to use the SQM to document your dark sky Park or Reserve, please please PLEASE
report your observations to Globe at Night, or else submit your observations using the Loss of the Night app.
Globe at Night: https://www.globeatnight.org/webapp/
Loss of the Night app: http://lossofthenight.blogspot.de/2015/01/brief-introduction-to-loss-of-night-app.html
That automatically archives the data for your park, it makes it accessible for scientists (like me), and your data will be visible to everyone at www.myskyatnight.com
It is very valuable for helping to track how the night sky is changing, and guarantees that your data will never be lost. If you have data from previous years that you would like to share with Globe at Night, you can contact them by email, and if your data is in an excel sheet or csv file, they will be able to add it to the international database.