Foreword
1 Introduction
2 Assumption and interpretations in this Report of the
  EC Air Quality Framework and Daughter Directives
  2.1 Annexes to the Daughter Directives
  2.2 Definitions and interpretation pf measurement
      uncertainty, level of confidence, and confidence
      interval, within the Ambient Air Quality Daughter
      Directives
3 EC Terms of Reference
  3.1 General
  3.2 Guide to the Expression of Uncertainty in Measurement
  3.3 International Standards ISO 5725 Parts 1 to 6
  3.4 International Vocabulary of Basic and General Terms
      in Metrology
  3.5 Other International Standards
4 Recommendations for the assessment of uncertainty of
  ambient air measurement methods
  4.1 Introduction
  4.2 Consistent approach to the assessment of uncertainty
      in the Ambient Air Quality Daughter Directives
5 Requirements for on-going quality assurance and quality
  control of field measurements covered by the EC Directives
  5.1 Overview of requirements
  5.2 Specific requirements of the Framework Directive
  5.3 Types of organisations involved
  5.4 Requirement for traceability to national or
      international accepted standards
  5.5 Demonstration of the competence of organisations
      involved with QA/QC activities
  5.6 The role of quality assurance and quality control
      for the on-going field measurements
  5.7 Procedures for the regular auditing of the performance
      of laboratories involved in QA/QC activities
  5.8 Conclusions
6 General philosophy for the development of future ambient air
  measurement methods
Annex A - Principles of the Reference Methods prescribed in the
          EC Air Quality Daughter Directives
Annex B - Data quality objectives contained in the Ambient Air
          Quality Daughter Directive covering benzene and
          carbon monoxide
Annex C - Reference measurement method for the implementation
          of EU Air Quality Directives
Annex D - Examples illustrating the approach specified in this
          Report for uncertainty estimation for ambient air
          measurement methods
Annex E - Definitions of measurement uncertainty terms used
          in this Report
Annex F - Outline description of a methodology for a proficiency
          testing scheme which could be used to underpin
          European harmonisation of ambient air quality
          measurements
Annex G - Members of the Ad-hoc Group on an approach to
          uncertainty estimation for ambient air measurement
          methods
Annex H - Acknowledgements
Bibliography