Incident radiation, fraction absorbed, and total absorbed radiation for each source.

The absorbed radiation was normalized to a PPF of 1000 µmoles per m2 per s for each radiation source. This does not result in exactly equal PAR (in watts per m2) because of spectral differences among radiation sources. The total absorbed radiation for each source is shown in bold. Leaf temperature was held constant at 25°C. Net longwave exchange with lower leaves or surfaces was assumed to be zero.针对每个辐射源，将吸收的辐射归一化至光合光子通量（Photosynthetic Photon Flux, PPF）为1000 μmol·m⁻²·s⁻¹。由于各辐射源的光谱存在差异，该归一化操作无法使以瓦每平方米为单位的光合有效辐射（Photosynthetically Active Radiation, PAR）完全相等。各辐射源的总吸收辐射量以粗体形式标注。叶片温度维持恒定为25℃。假定与下层叶片或表面的净长波交换量为零。