Table 1. Light intensity without a bird's head (Tmax) and at the hypothalamic level (T) at different wavelengths.
| Wavelength (nm) | Light intensity (μW/cm2) | T/Tmax | |
|---|---|---|---|
| Tmax | T (n = 3) | ||
| 300 | 0.655 | 3.80.E-04 | 5.80.E-04 |
| 325 | 4.30 | 9.68.E-04 | 2.25.E-04 |
| 350 | 45.5 | 1.29.E-03 | 2.83.E-05 |
| 375 | 86.0 | 2.28.E-03 | 2.65.E-05 |
| 400 | 135 | 2.16.E-03 | 1.60.E-05 |
| 425 | 142 | 3.34.E-03 | 2.35.E-05 |
| 450 | 176 | 2.80.E-03 | 1.60.E-05 |
| 475 | 147 | 5.10.E-03 | 3.47.E-05 |
| 500 | 125 | 3.79.E-03 | 3.04.E-05 |
| 525 | 141 | 3.57.E-03 | 2.54.E-05 |
| 550 | 139 | 4.45.E-03 | 3.20.E-05 |
| 575 | 128 | 3.48.E-03 | 2.71.E-05 |
| 600 | 80.5 | 3.44.E-03 | 4.28.E-05 |
| 625 | 80.0 | 8.00.E-03 | 1.00.E-04 |
| 650 | 65.5 | 9.75.E-03 | 1.49.E-04 |