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Table 4 Summary results of vertical illumination, contrast ratio and vector/ scalar ratios for task surface illumination of 400 Lux

From: Evaluations of Low ambient task - surround lighting system in a simulated environment

Lighting scenario (Lux) Vertical contrast ratio illumination (CR) Vector/scalar ratio (V/S)
  Center Side Center Side Center Side
Ambient 400 Sur 0 Task 0 227 245 1.8:1 1.6:1 1.27 1.52
Ambient 100 Sur 0 Task 300 73 82 5.5:1 4.9:1 0.12 1.28
Ambient 100 Sur 100 Task 200 118 146 3.9:1 2.7:1 1.70 1.58
Ambient 100 Sur 150 Task 150 142 178 2.8:1 2.2:1 2.01 1.70
Ambient 100 Sur 200 Task 100 172 219 2.3:1 1.8:1 2.23 1.79
Ambient 100 Sur 300 Task 0 228 293 1.8:1 1.4:1 2.48 1.91