Table 1.
Description of light conditions used in experiments with Atlantic cod (Gadus morhua) larvae
| Dusk | Night | Darkness | |
|---|---|---|---|
| Time of observation in field | 20:00 | 23:00 | 00:00 |
| Surface light measurements from field data in 1–5 April (lux) | 4.24 | 0.40 | 0.165 |
| Light at 20 meters according to K = 0.12 | 0.38 | 0.036 | 0.015 |
| Light applied in experiment (W · m−2) | 1.36 × 10−3 | 1.36 × 10−4 | 3.4 × 10−6 |
| Light applied in experiment (converted to lux in white light) | 0.34–0.48 | 0.034–0.049 | 0.0009–0.0012 |
Conversions between W · m−2 are based on highest and lowest literature conversion factors that report conversion of lux in white light