Table 1 Horizontal and vertical desk illuminance values on the intervention and control floors.
| Floor | Average horizontal illuminance at working plane (SD) | Average % daylight contribution to horizontal illuminance (SD) | Average vertical illuminance at the eye position (SD) | Average % daylight contribution to vertical illuminance (SD) |
|---|---|---|---|---|
| A. Intervention (17000 K) | 311 lux (112) | 13% (10) | 170 lux (85) | 40% (33) |
| B. Control (2900 K) | 354 lux (45) | 11% (10) | 128 lux (44) | 55% (32) |