Small bug in TCP_Rewriter

Sirs,

What is the best form to analyse the BRO received packets?
I need to calculate how many false positives bro detected in a determinated
period.

I didn't have success in reports, I continue receiving empty reports, then I
need to analyse the logs or using other way to detect what event is a false
positive and why is not.

Please, can you help me?

Thanks
Angelita