Microtic + NPS. How do I collect statistics about VPN connections?

There is a bunch of Microtik + Windows Radius (NPS) + AD. How can I process statistics on VPN connections in some visual form? Microt writes logs, I collect them in mikrotik syslog daemon, but I can't find anything to process them with later. At the moment, I count my hands later in excel, but this is inconvenient. NPS also writes something, but I can't find where to connect its data. The task is simple - you need to get the total time that a person spent with the VPN enabled. a day. Please tell me the simplest solution. Thank you

Author: Norbert Yuhas, 2020-04-01