Table 1.
Summary of lighting characteristics assessed during the study derived from stationary and wearable light sensors.
| Condition | Photopic Ev [lux] | Melanopic EDI [lux] |
Individual Ev (wearable light sensor) [lux] | |
|---|---|---|---|---|
| Office hours | Office hours | Office hours | All day (from waketime to bedtime) | |
| Reference room |
858 ± 478 (n = 34) |
730 ± 390 (n = 18) |
1036 ± 1518 (n = 33) |
675 ± 1351 (n = 33) |
| Test room |
1177 ± 562 (n = 31) |
931 ± 484 (n = 18) |
1018 ± 1246 (n = 30) |
650 ± 1132 (n = 30) |
Light exposure measurements: Stationary light sensors: Ev = photopic illuminance, EDI = melanopic equivalent (D65) daylight illuminance (lux), both assessed on a vertical plane at the approximate eye level during office hours. Wearable light sensors: individual Ev during office hours and during entire waking period (mean ± SD per hour across days and participants). Bold numbers (for photopic Ev and melaonpic EDI) indicate significantly higher values in the Test room than the Reference room (p < 0.05).