Hi. Hi. I am comparing the results of my monitor located on Leeward Lane in Port Jefferson, Long Island, with the results obtained from several monitors stationed in the immediate area (e.g., 10-mile range). These are: Beach Street in Port Jefferson, another in Rocky Point, and a third near Landing Avenue in Smithtown. Does anyone have information about these stations and their functioning? I am finding significant differences in PM2.5 readings from those reported by my monitor. Thanks.