condition  pCO2  irradiance  photosyn  photosyn_sd  
P_replete  74    10.3        0.0252    0.0049973    
P_replete  74    19.3        0.0772    0.01         
P_replete  74    40.3        0.341     0.1225       
P_replete  74    62.7        0.6878    0.2494       
P_replete  74    81.3        1.354     0.3385       
P_replete  74    105         2.0515    0.2308       
P_replete  74    154         2.6205    0.1666       
P_replete  74    210         2.763     0.1231       
P_replete  74    311         3.001     0.1007       
P_replete  74    414         3.039     0.1032       
P_replete  74    607         3.2415    0.0909       
P_replete  74    826         3.194     0.1171       
P_replete  74    1004        3.2177    0.0649