The important part of this screen is "Anomaly Graph". Anomaly graph shows your average taraffic shape and the current hit counts. Your average traffic shape is calculated based on your past traffic and shown as blue shaded area on the graph. Your current hit rate is shown as line. If your current hits is above the average in some limits, which is shown under the graph, the line colour changes. By analysing this graph you can easily identify any anomalies in your network. For showing specific data based on category, you can select desired main category or sub category