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Table 3 Detail data on computations of 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

  Center location point Side location point
Scenario 1 Ambient 400 Surround 0 Task 0  
  E (x) 227 E (−x) 220 ʽE(x) 7 ~E(X) 220 E (x) 245 E (−x) 139 ʽE(x) 106 ~E(x) 139
  E (y) 212 E (−y) 227 ʽEy) −15 ~E(Y) 212 E (y) 196 E (−y) 207 ʽE(y) −11 ~E(y) 196
  E (z) 476 E (−z) 128 ʽE(z) 348 ~E(Z) 128 E (z) 445 E (−z) 104 ʽE(z) 341 ~E(z) 104
  Vector (Mag) 348 E (Vert) 227      Vector (Mag) 357 E (Vert) 245     
  Scalar 274 E(Horz) 400      Scalar 236 E(Horz) 400     
  V/S 0.12 CR 5.5      V/S 1.28 CR 4.88     
Scenario 2 Ambient 100 Surround 0 Task 300  
  E (x) 73 E (−x) 70 ʽE(x) 3 ~E(X) 70 E (x) 82 E (−x) 39 ʽE(x) 43 ~E(x) 39
  E (y) 70 E (−y) 71 ʽE(y) −1 ~E(Y) 70 E (y) 54 E (−y) 57 ʽE(y) −3 ~E(y) 54
  E (z) 120 E (−z) 110 ʽE(z) 10 ~E(Z) 110 E (z) 113 E (−z) 41 ʽE(z) 72 ~E(z) 41
  Vector (Mag) 10 E (Vert) 73      Vector (Mag) 84 E (Vert) 82     
  Scalar 86 E(Horz) 400      Scalar 66 E(Horz) 400     
  V/S 0.12 CR 5.5      V/S 1.28 CR 4.88     
Scenario 3 Ambient 100 Surround 100 Task 200  
  E (x) 118 E (−x) 112 ʽE (x) 6 ~E(x) 112 E (x) 146 E (−x) 51 ʽE(x) 95 ~E(x) 51
  E (y) 118 E (−y) 115 ʽE(y) 3 ~E(y) 115 E (y) 70 E (−y) 73 ʽEy) −3 ~E(y) 70
  E (z) 453 E (−z) 115 ʽE(z) 338 ~E(z) 115 E (z) 163 E (−z) 49 ʽE(z) 114 ~E(z) 49
  Vector (Mag) 338 E (Vert) 118      Vector (Mag) 148 E (Vert) 146     
  Scalar 199 E(Horz) 400      Scalar 94 E(Horz) 400     
  V/S 1.70 CR 3.39      V/S 1.58 CR 2.74     
Scenario 4 Ambient 100 Surround 150 Task 150  
  E (x) 142 E (−x) 132 ʽE(x) 10 ~E(X) 132 E (x) 178 E (−x) 56 ʽE(x) 122 ~E(x) 56
  E (y) 143 E (−y) 137 ʽEy) 6 ~E(Y) 137 E (y) 75 E (−y) 78 ʽEy) −3 ~E(y) 75
  E (z) 632 E (−z) 115 ʽE(z) 517 ~E(Z) 115 E (z) 184 E (−z) 52 ʽE(z) 132 ~E(z) 52
  Vector (Mag) 517 E (Vert) 142      Vector (Mag) 180 E (Vert) 178     
  Scalar 257 E(Horz) 400      Scalar 106 E(Horz) 400     
  V/S 2.01 CR 2.82      V/S 1.70 CR 2.25     
Scenario 5 Ambient 100 Surround 200 Task 100  
  E (x) 172 E (−x) 158 ʽE(x) 14 ~E(X) 158 E (x) 219 E (−x) 62 ʽE(x) 157 ~E(x) 62
  E (y) 174 E (−y) 165 ʽEy) 9 ~E(Y) 165 E (y) 83 E (−y) 86 ʽEy) −3 ~E(y) 83
  E (z) 856 E (−z) 118 ʽE(z) 738 ~E(Z) 118 E (z) 210 E (−z) 58 ʽE(z) 152 ~E(z) 58
  Vector (Mag) 738 E (Vert) 172      Vector (Mag) 219 E (Vert) 219     
  Scalar 332 E(Horz) 400      Scalar 122 E(Horz) 400     
  V/S 2.23 CR 2.33      V/S 1.79 CR 1.83     
scenario 6 Ambient 100 Surround 300 Task 0  
  E (x) 228 E (−x) 206 ʽE(x) 22 ~E(X) 206 E (x) 293 E (−x) 73 ʽE(x) 220 ~E(x) 73
  E (y) 230 E (−y) 218 ʽEy) 12 ~E(Y) 218 E (y) 97 E (−y) 100 ʽEy) −3 ~E(y) 97
  E (z) 1273 E (−z) 112 ʽE(z) 1161 ~E(Z) 112 E (z) 258 E (−z) 68 ʽE(z) 190 ~E(z) 68
  Vector (Mag) 1161 E (Vert) 228      Vector (Mag) 291 E (Vert) 293     
  Scalar 469 E(Horz) 400      Scalar 152 E(Horz) 400     
  V/S 2.48 CR 1.75      V/S 1.91 CR 1.37