Year CO2 CH4 N2O PFC,HFC,SF6 Montreal_gasses
2010 1.793327829 0.508170015 0.174287087 0.028331115 0.25990474
1990 1.288732214 0.470354525 0.129200535 0.0111088 0.229976021
1950 0.594955859 0.235243101 0.064408219 0 0