| 1 | The ratio is a net figure. | |
| 2 | During the housing bubble, this ratio jumped to 4.2. | |
| 3 | In other words, the ratio of energy to temperature should be involved here. | |
| 4 | But apart from just being able to get the ratio, we can get the absolute number. | |
| 5 | There is a significant change in the red to far-red ratio if a plant is shaded by foliage. |