Figure 2

Distribution of time the application was running for each user. The distribution of time the application was running for each user. During the parade, location updates from up to 244 users were received simultaneously, at any one time. On average, $4\text{,}719$ location updates were recorded per user. This corresponds to a running time of 78.65 minutes. A few users shared more than $10\text{,}000$ samples which requires them to run the application for more than 2.7 hours.