How to plot the graph of my data to compare it with Poisson graph?

Hi,

I have the following format of the arrival data to center. I need to plot the frequency graph to compare it with the Poisson graph which I have done it. What is the graph should I plot to compare it with the Poisson distribution? and how can I do that?

*the tasks to the center more than 3000 but I have put below an example.

04/03/2013 13:41
04/03/2013 13:49
04/03/2013 13:50
04/03/2013 13:53
04/03/2013 14:02
04/03/2013 14:07
04/03/2013 14:10
04/03/2013 14:18
04/03/2013 14:27
04/03/2013 14:31
04/03/2013 14:52
04/03/2013 14:52
04/03/2013 15:06
06/03/2013 08:43
06/03/2013 09:20
06/03/2013 09:32
06/03/2013 09:52
06/03/2013 09:56
06/03/2013 10:30
06/03/2013 10:58
06/03/2013 11:09
06/03/2013 11:17
06/03/2013 11:21
06/03/2013 11:32
06/03/2013 11:55
06/03/2013 12:03
06/03/2013 12:10
06/03/2013 12:19
06/03/2013 12:24
06/03/2013 12:26
06/03/2013 12:39
06/03/2013 12:45
06/03/2013 12:46