The systems and methods described herein relate to storing values, such as sketches, that represent time indexed data related to network traffic. The model may be indexed by multiple sets of keys and time range values. It is an advantage that the index is essentially repeated for different time intervals. Utilization of the sketches avoids prohibitively large amounts of network traffic from overwhelming the monitoring computing device(s). Further, the probabilistic representative accuracy of the sketches is dynamically configurable. The time indexed data may represent data traffic on a computer network. The time indexed data may be data packets sent on the network. In one or more embodiments the time indexed data may be sketches that represent and/or approximate the data packets. Further, it is contemplated herein that the accuracy of the sketches' representation may be dynamically configurable.