See for example https://qa.debian.org/popcon-graph.php?packages=chrony The request for the graph image at https://qa.debian.org/cgi-bin/popcon-png?packages=chrony&show_installed=1&show_vote=1&show_old=1&show_recent=1&show_nofiles=1&want_percent=0&want_legend=1&want_ticks=1&from_date=&to_date=&hlght_date=&date_fmt=%25Y-%25m times out after two minutes. Best regards, g.