CONTENTS 



Page 



Introduction 1 



General description of streams 1 



Variability in estimates 2 



Testing procedures 2 



Results of first set of tests 2 



Results of second set of tests: 



Test IIA 4 



Test IIB 4 



Test lie 4 



Evaluation and recommendations 5 



Summary and conclusions 7 



Acknowledgments "7 



Literature cited 7 



