Alan Seymour’s efforts to find an effective method to display Dew Point while on board Sally W was detailed in the Panbo article found at https://panbo.com/monitoring-dew-point-temperature-at-your-helm-why-and-how/. Alan worked with Ben Ellison to find the right equipment and connections to make the displays work properly. The quest for dew point is important in Maine where the fog can set in fast and heavy. The bottom line is the closer the air temperature approaches the dew point there is a likelihood of fog, conversely as they diverge fog lifts. I suggest if you have any questions on this topic to ask the LNVT expert, Alan Seymour.