Figure 2.

GWP of first-generation biofuels without land-use change. Based on data from [24,32,34,47–118]. For the box plot legend, see electronic supplementary material, figure S1 and for the data used to plot this graph, see electronic supplementary material, figure S2. ‘Fossil fuel (reference)’ is the average carbon intensity of petrol and diesel supplied in the EU (94 g CO₂ eq. MJ⁻¹) as specified in the RED [8]. ‘A’ refers to the number of LCA articles found in the literature and ‘n’ denotes the total number of analyses. (Online version in colour.)