Access tokens will not be accepted in URL parameters starting February 13, 2019. To continue working with the Yandex.Metrica API, set up authorization by passing the token in the HTTP header.
The outdated authorization method will be temporarily disabled on January 23, January 30, and February 6 for maintenance. Authorization using URL parameters will be unavailable on these dates.
Time in seconds spent by the site user during one session.
Number of sessions.
Number of sessions, during which only one page was viewed.
Percentage of sessions during which only one page was viewed.
Average session duration, in seconds.