interface wireless monitor interval

When getting a monitor command for the wireless interfaces you are able to set an interval, but it’s not clear what this specific command does. I’m just curious if anyone knows what it does. Does it take the average over the past time amount, or does it do something else? It doesn’t take any longer to run the command with it specified to the max 5 seconds, or not specified.

It means “how often the data should be refreshed”