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Methane (CH₄) in 1994 (global mean)
Annual mean1,742.2 ppb
vs previous year+5.6 ppb
Rank of increase27 / 41
Max − min within year19.4 ppb
By month
| Month | Concentration | vs same month last year |
|---|---|---|
| Jan | 1,741.4 ppb | +5.6 |
| Feb | 1,740.8 ppb | +6.4 |
| Mar | 1,741.9 ppb | +6.5 |
| Apr | 1,742.0 ppb | +5.4 |
| May | 1,740.8 ppb | +5.7 |
| Jun | 1,736.9 ppb | +6.0 |
| Jul | 1,732.3 ppb | +4.3 |
| Aug | 1,734.1 ppb | +2.9 |
| Sep | 1,743.0 ppb | +4.5 |
| Oct | 1,749.9 ppb | +6.5 |
| Nov | 1,751.4 ppb | +6.2 |
| Dec | 1,751.7 ppb | +7.4 |
+11.3 ppb
+9.9 ppb
+10.4 ppb
+10.5 ppb
+1.1 ppb
+5.6 ppb
+6.7 ppb
+2.4 ppb
+3.3 ppb
+11.1 ppb
+6.7 ppb
Bars: yearly increase in the surrounding years. NOAA GML global monthly means.