E. 1.2 -0- LPS - HPS -O . 0 -A- HPMV OE0 -N- CMH 4K 0.00.20.40.61.20.8 luminance cd/m-2

Figure 1. Key: LPS = low pressure sodium; HPS = high pressure sodium; HPMV = high pressure mercury vapour; CMH 4K = ceramic metal halide. CCT 4000K.

luminance cd/m-2 Figure 2. Key: CMH 4K = ceramic metal halide. CCT 4000K & R„ 95;

CMH 3K = ceramic metal halide, CCT 3000K & 82; QMH = quartz metal halide with CCT 3000K & 12„ 70 (I); CCT 4000K & R„ 85 (2); CCT 3300K & R„ 70 (3); CCT 4000K & R„ 80 (4).