Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Coordinate system, terminology and symbols
5 ISO standard diffuse density
6 ISO standard projection density
Annex A (normative) Diffusion coefficient
Annex B (informative) Unmatched influx and efflux angles
Annex C (informative) Position of the diaphagram
determining the sampling aperture
Bibliography