We can add summary report as listenere to our thread group.

Summary report consumes less memory than aggregate report when number of users is more than 25 etc.

Summary reports contain a field named Standard deviation. It is how many times the iterations were deviating from the average value.so standard deviation should always be of lesser value.

And same as aggregate reports we have aggregate graphs.Here we can see the report and click graph to see results in graphical format as well.