| γph_norm | photosynthetic emission potential normalized to standard conditions |
| γen_norm | enzymatic emission potential normalized to standard conditions |
| EF | emission under standard conditions (30 °C and 1000 μmol m−2 s−1 light, 365 ppm |
| CO2 air concentration) (μg g−1 DW h−1) | |
| RER | relative emission response (−) |