The following log is an example.
Question is, what does it mean when a user is listed multiple times, within the same time period and with the same site visited?
does it mean they used three browsers to go to same site?

2003-01-03 08:29:40 user1 Allow http www.aol.com HTTP Proxy
38729973
2003-01-03 08:29:40 user1 Allow http www.aol.com HTTP Proxy
38729973
2003-01-03 08:29:40 user1 Allow http www.aol.com HTTP Proxy
38729973
2003-01-03 08:29:40 user1 Allow http www.aol.com HTTP Proxy
38729973