Abstract

From August 1992 until july 1993, ozone quality control measurements were carried out in the Dutch National Air Quality Monitoring Network (LML). Measurement results from 17 LML measurement locations were compared with those from a reference monitor. It can be concluded that on average ozone levels from the LML give an underestimation of 4,9%, which is independent of the absolute measured levels. In some cases, deviations up to 20% are found suggesting the need for further investigation.