Newbie help request

Could I possibly get a little help with getting the afterglow / neato tools usefully working. have 291 lines of data and for the life of me the graphs I'm generating are quite poor.

I am not a Perl programmer but have managed to get cygwin working and afterglow & neato working.
using this sample set of the 291 I can get the two diagrams I have attached, but I would dearly like some advise how to generate a more representative image.

If this forum is inappropriate for a little mentoring then please advise / delete as appropriate.

With kind regards,
Stephen
10.140.122.23,10.142.162.88,80
10.142.40.198,10.142.44.233,80
10.129.20.81,10.142.162.88,80
10.142.45.99,10.142.162.88,80
10.142.41.106,10.142.162.88,80
10.142.41.106,10.142.162.88,80
10.142.45.191,10.142.162.88,80
10.239.41.33,10.143.23.79,80
10.142.36.98,10.142.162.88,80
10.142.36.98,10.142.162.88,80
10.142.45.99,10.142.162.88,80
10.142.45.70,10.142.162.88,80
10.142.45.70,10.142.162.88,80
10.143.24.45,10.142.44.233,80
10.142.41.194,10.142.162.88,80