create a map network coverage

Hey, you should create a professional map for our presentation. We were in Munich for a test drive. During test drive we have recorded gps coordinates and the percentage value of connection quality to our basis station. So we have now for each gps coordinate a percentage value. You can take the gps coordinates and the numbers from the excel table. You are completely free with the design. Show your creativity. There are a lot of points that we have recorded. You do not have to create all of these points in the map. For example: In ten seconds you have ten points with the same percentage value --> so you can show just one of them in the graphic (or you can take average of percentage value for ten coordinates.) Maybe you can create different maps with different zoom levels. You do not have to use for each point another color. You can use the same colors for the points with percentage value 0-20% red, 20-40% orange 40-60%yellow..... 80-100% green. *please see the attachment Thank you!