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Table 1 Average values of general and local illumination and luminance before and after the intervention

From: The effect of increasing the illumination on operators’ visual performance in the control-room of a combined cycle power plant

Parameters Average of general illumination in control-room (Lux) Illumination of working surface1 (Lux) Luminance of display1 (Cd/m2) Luminance of working surface1 (Cd/m2) Illumination of working surface2 (Lux) Luminance of display2 (Cd/m2) Luminance of working surface2 (Cd/m2)
Before intervention (first phase) Day 302 230 6.3 4.2 240 7.1 5.4
Night 180 153 0.16 0.12 135 0.05 0.03
After intervention (second Phase) Day 302 415 15.2 12.9 426 16.2 14.8
Night 180 350 0.2 0.18 332 0.13 0.1