I see that Maretron’s DSM150, DSM200, and DSM250 displays have a WSO100 configuration setting called "Outside Humidity:"; what is this?

Maretron’s DSM150, DSM200, and DSM250 displays have a WSO100 configuration setting called "Outside Humidity", which is used to adjust the WSO100 outside humidity reading to account for local variation. For example, if you want to adjust the outside humidity per your local weather report, you can use this setting to adjust the WSO100.