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Month
13
Year
Annual Average
9
CH4
6
TRENDS-OTHER ATMOSPHERIC TRACE GASES
6
atmospheric
6
flask air samples
6
gas chromatography
6
gas detector
6
mercuric oxide reduction
6
methane
6
Atmospheric CO2
4
Atmospheric Carbon Dioxide
4
CSIRO
4
Flame Ionization Detection
4
Flask Sampling
4
GASLAB
4
Gas Chromatography
4
TRENDS: Atmospheric Carbon Dioxide
4
arithmetic means of the 12 monthly values
4
Atmospheric
3
Flask air samples
3
Gas chromatography
3
Gas detector
3
H2
3
Hydrogen
3
Mercuric oxide reduction
3
see all ...