Oldest data points are near the center of the graph, with newest near the edge. Data is color-coded according to windspeed, and located on the graph according to direction. All data is loaded in realtime from your weather station to btstWx PRO. Giving you the latest, up-to-date weather data. For WeatherFlow Smart Weather Stations, use an Access Code of 'SWS' and your station id (ex: SWS1158).