CONTENTS

INTRODUCTION

PREFACE

LIST OF TABLES

LIST OF FIGURES

EXECUTIVE SUMMARY

1. INTRODUCTION

2. INDICATOR FORMAT

COMBINING POLLUTANTS
COUNTING EXCEEDENCES
THRESHOLD SELECTION
OBJECTIVES
CONCLUSIONS

3. DATA INCLUSION CRITERIA

INTRODUCTION
MONITORING NETWORKS
DATA CAPTURE CRITIERIA
MONITORING REQUIREMENTS
RURAL AND REMOTE SITES
URBAN BACKGROUND AND CENTRE SITES
SUBURBAN SITES
KERBSIDE AND ROADSIDE SITES
URBAN INDUSTRIAL SITES
MONITORING REQUIREMENTS - CONCLUSIONS
DISCONTINUOUS DATA
OUTLIERS
CONCLUSIONS

4. ANNUAL INDICATOR

INTRODUCTION
URBAN AND RURAL INDICATORS
AGGREGATING URBAN AND RURAL SITES
PRINCIPAL POLLUTANTS CAUSING POLLUTION EPISODES
MULTIPLE EXCEEDENCES OF THE STANDARD ON A SINGLE DAY
SITE SPECIFIC INFORMATION
REGIONAL ANALYSIS
EPISODES OF HIGH AND VERY HIGH POLLUTION

5. BI-ANNUAL AND QUARTERLY INDICATORS

INTRODUCTION
QUARTERLY TRENDS
QUARTERLY POLLUTANT ANALYSIS
QUARTERLY INDICATOR
BI-ANNUAL INDICATOR
CONCLUSION

6. AIR POLLUTION HEADLINE INDICATOR

INTRODUCTION
INDICATOR FORM AND DATASET
ANNUAL, BI-ANNUAL AND QUARTERLY INDICATORS
HEADLINE AIR POLLUTION INDICATOR AND SUPPLEMENTARY INFORMATION
RECOMMENDATIONS

7. REFERENCES

The consultation paper Sustainability Counts is also available.