Scientists in Sheboygan will be measuring the area’s air pollution problem by land, air and sea.Sheboygan County has long had the reputation of having some of the worst air quality in the state — but scientists have not been able to pin down exactly way.“Having those high ozone levels along the Lake Michigan shore has been a perplexing science problem for a long time,” R. Bradley Pierce, a scientist with the National Oceanic and Atmospheric Administration, said.