Your post encouraged me to see what was in
The Manual about these reports. Page 45 & 47 is all I found. I must admit I've never used either on my web site and probably only viewed them accidentally!
Being concerned only for
myself , I would like to know that these reports are simply for the daily/monthly/annual collecting of data that
remains in the database. In other words,
deleting them,
will not affect the database. Likewise, the highest/lowest values are only queries made by WC when it 'sees' the "MAX' and 'MIN' TYPE stat request.
Sorry to be so dense, but these reports are probably always available with appropriate queries of the database, at least that seems to be what
Michael is saying:
If I want access to historic data I can check the main database.