Monthly log files
Please see Standard log files, Extra Sensor Files, Month.ini or Monthlyalltime.ini as relevant.
Please be aware that all of above may be called monthly log files in individual Cumulus forum and wiki references. The Steve Loft terminology for each of the log files has been adopted now to avoid future confusion.
The adoption of the name "monthly log" that used to be used for the last two files named above has shifted to the first named file with the introduction of MX as in that flavour of Cumulus, it is used for the log file feeding into a database table called Monthly.