In above shown graph, minute-wise comparative strengths of the five birds have been plotted on Y-axis and time has been shown on X-axis.
The time duration is from 10:00 hrs to 14:00 hrs. Though, the actual data is for "Every minute" in sent report, but due to space constrains of the screen, the graph has been plotted at an interval of 4-minutes. This time interval in the shown graph may be decreased or increased by yourself in MS-Excel while creating graph.

The concerned report would normally be sent as a simple text file containing "Strength values" only (and not as a graph). The various columns of the report would be delimited with a "comma". Thus, data presented in that report may easily be imported in MS-Excel by your-self to create graphs (as shown above or in various other formats), if you wish to graphically visualize the comparative strengths of five birds.