CONTENTS

Annex 1     
 1     Introduction    
 2     Requirements  
        2.1     Equipment
        2.2     Site considerations           
        2.3     Relationship between several parameters
        2.4     Transmission lengths        
        2.5     Duration of monitoring    
        2.6     Time resolution of measurements
        2.7     Accuracy and statistical confidence level
        2.8     Limitations on monitoring           
        2.9     Presentation and analysis of collected data         
       2.10     Exchange of data
                  2.10.1     Data format