| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. dark, gloomy | 179 |
5.9%
|
| 2 | 2. poor light | 492 |
16.1%
|
| 3 | 3. average light | 1008 |
33%
|
| 4 | 4. bright | 1379 |
45.1%
|
| Sysmiss | 1480 |