Hi,

Two different Moodle sites are experiencing a row of zeros and a row of correct stats in the monthly report with any report type. The dates that the zeros start in the report & graph are completely different between the Moodle sites.

It looks like the function stats_fix_zeros doesn't determine that the variant is handled in the stats code and then generates a row of zeros per month which is added to the stats report.

By updating the report with this line to skip the zerofixed state everything looks fine.

if (!empty($stat->zerofixed)) {
continue;
$missedlines[] = $stat->timeend;
}

Weekly report are fine in the same period :-

Timeend: Sunday, 12 April 2009, 12:00 AM vs stats_get_base_monthly: Sunday, 12 April 2009, 12:00 AM;
Timeend: Sunday, 5 April 2009, 01:00 AM vs stats_get_base_monthly: Sunday, 5 April 2009, 01:00 AM;
Timeend: Sunday, 29 March 2009, 01:00 AM vs stats_get_base_monthly: Sunday, 29 March 2009, 01:00 AM;

Monthly report aren't fine in the same period :-

Timeend: Wednesday, 1 April 2009, 11:00 AM vs stats_get_base_monthly: Wednesday, 1 April 2009, 01:00 AM;
Timeend: Sunday, 1 March 2009, 11:00 AM vs stats_get_base_monthly: Sunday, 1 March 2009, 01:00 AM;
Timeend: Sunday, 1 February 2009, 11:00 AM vs stats_get_base_monthly: Sunday, 1 February 2009, 01:00 AM;
Timeend: Thursday, 1 January 2009, 11:00 AM vs stats_get_base_monthly: Thursday, 1 January 2009, 01:00 AM;
Timeend: Monday, 1 December 2008, 11:00 AM vs stats_get_base_monthly: Monday, 1 December 2008, 01:00 AM;
Timeend: Saturday, 1 November 2008, 11:00 AM vs stats_get_base_monthly: Saturday, 1 November 2008, 01:00 AM;
Timeend: Wednesday, 1 October 2008, 10:00 AM vs stats_get_base_monthly: Wednesday, 1 October 2008, 12:00 AM;