The values published are based on illuminance concept. Further to the average maintained illuminance and minimum to average ratio, the minimum to maximum ratio was introduced.
Attention is focused on design values.
Other topics, as colour quality, maintenance, environmental aspects, design and measurement are only mentioned in this paper, detailed recommendations or standards are to be sought for in relevant CIE and ISO publications. The publication is written in English, with a short summary in French and German. It contains 20 pages and is readily available from the CIE National Committees or the Central Bureau of the CIE in Vienna.