This section provides raw measurement sets taken using prototype implementation on a Android N1 based smartphone. V-GPS sensor selection model is developed to dynamically select sensors and characterize its quality of location information that it can offer. The availability and accuracy of location sensors varies with location. For example, GPS may not work indoors or work poorly in areas, WiFi AP signatures work where the number of access points are available. The V-GPS considers such effects and using sensor data history for each location, provides accuracy and location information to applications. In this experiment we have used four android based devices to simultaneously collect data for various regions as shown in the table, 1. In our experiments we drove around University of Houston Campus to collect the data samples at various predetermined locations and as expected and observe that GPS provides most accurate location information but with highest power consumption and it goes into a search mode when there is no clear LOS between GPS constellation and smartphone. It constantly searches for GPS satellite when the view is not clear and this consumes lot of energy.