Before revision:  Our emission estimatesreflect near real time inventories of emissions }  from power generation , transportation, industry, international aviation and maritime sectors in 34 countries that account for >70\% of world energy-related CO2 emissions in recent years.
After revision:  Our emission estimatesreflect near real time inventories of emissions \sigma} from power generation , transportation, industry, international aviation and maritime sectors in 34 countries that account for >70\% of world energy-related CO2 emissions in recent years.