**This app will not work without the associated methane sensor**. This app is designed to communicate with the DJI Matrice drone, carrying an onboard methane sensor. It shows two main views, the camera view shows the image from the FPV camera, with he current wind direction indicated by a large red arrow. The second view shows the real-time methane plot. By flying a pattern downwind of the methane source, from 5 feet over the ground, progressively higher until the drone is above the methane plume (indicated by no large spikes on the methane plot), you will have the data necessary to calculate the methane emission.