FW per m^-2 Control =  6.454181  FW g plant^-1 
 x 12 plants tray ^-1 / 0.09 m2 tray-1 =  860.5574  g FW m^-2 
FW per m^-2 Feedback =  7.322361  g plant^-1 
 x 12 plants tray ^-1 / 0.09 m2 tray-1 =  976.3148  g FW m^-2 
CO2e UK Grid (2023) = 207 g CO2e kWh^-1 
Control kW h m-2 =  24.99333  x 207 g CO2e kWh^-1 =  5173.62 g CO2 m^-2 
Feedback kW h m-2 =  23.44667  x 207 g CO2e kWh^-1 =  4853.46 g CO2 m^-2 
Control g CO2e g FW^-1 =  5173.62  /  860.5574  =  6.01 
Feedback g CO2e g FW^-1 =  4853.46  /  976.3148  =  4.97 
Difference =  1.04 g CO2e m^-2 
Percent difference =  -17.3 %