I agree with @PeterH.
What would normally receive the data and what would it do with it? Could you interface to that device?
Can you get a specification for the data? Is it, perhaps, a fire protection industry standard system?
The data you posted seems to fall into 4 categories - a very large number, a number of about 1500, a number of about 800 and a number of about 400. If you think of the data in those terms can you reliably identify which type of signal is being sent?
Even if you can, will your insurance company be happy?
...R