Table 4.
Illuminances of the diffuse light in the forest in relation to the light in the open
| Steady state of the diffuse light level lux | The light in the open at the turning point (T) lux | Relative light intensity (%) |
|---|---|---|
| 500 | 12,000 | 4.1 |
| 650 | 13,000 | 5.0 |
| 1,750 | 20,000 | 8.8 |
| 4,200 | 23,000 | 13.0 |
| 5,500 | 39,000 | 14.0 |
| 9,000 | 45,000 | 20.0 |
| 12,000 | 50,000 | 24.0 |