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. 2016 Sep 14;11(9):e0161947. doi: 10.1371/journal.pone.0161947

Table 2. Global average carbon footprints and methane shares using different approaches.

Model CO2e (kg/MWh) Share of CH4
Per energy unit (Model 1) 577 16%
Areal fluxes (Model 2) 245 61%
Average of both models (Model A) 411 29%
Corrected average of both models (Model AC) 404 42%
Corrected average of both models with GWP20 661 64%