Assessment of Ozone Injury

Survey code: OZ

Monitoring System: Level II

Survey frequency: Continous (Annual submission)


  • PLL: Plot file

  • LTF: Assessment on main tree species (foliar trees)

  • LSS: Light Exposed Sampling Site (LESS)

  • OTS: Other symptomatic species

  • OZP: Ozone photo documentation

Special Notes

In PLL form, it is possible that a country reports that the OTS survey has been conducted, even though there are no data reported for this plot in the OTS file.

In such cases, in the PLL it may be indicated that the OTS survey has been carried out, but if no species are reported in the OTS form, this indicates that there were no symptomatic species in that plot.