Download Raw Logs

Hello
When i am in control panel and i click on Raw Access Logs i can download a log file...

For which period there are the logs ? There is a rule ?

Until now i downloaded for domain 3 log files:


1 in 5.28.2004 which contains the logs from 24 to 28 May

2. in 6.2.2004 which contains the logs from 1 to 2 June

3. in 6.12.2004 which contains the logs from 1 to 12 June

Thanks

Robbie