Today another one of our many sensors arrived so Joe and I had to try to work out how to use it. This sensor will be used to determine the concentration of methane gas in the air so we will be able to measure different concentrations as we drive a cart (with this sensor on it) through a plume of methane gas. This sensor seems relatively easy to use except for a few problems that we found. For instance when the sensor records data points there is a time associated with each point. This is important because we need to know the times so we know where we are in the plume. Unfortunately the time was around 8 hours off. Tomorrow we will work to try to fix this.