ADDITIONAL WEATHER INFORMATION Average Air Temperature: 15.6 degrees C 289.5 K Lid Height: 921.9 meters Humidity: 9.8 g/cu m Surface Roughness Height: 0.010 meters Height of Wind Measurements: 30.0 meters Average Wind Speed: 1.609 m/s Vertical Temperature Gradients: STABILITY A -0.003 K/m STABILITY B -0.003 K/m STABILITY C -0.006 K/m STABILITY D 0.001 K/m STABILITY E -0.002 K/m STABILITY F 0.014 K/m STABILITY G 0.038 K/m