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Nitrous oxide (N₂O) in 2004 (global mean)
Annual mean318.26 ppb
vs previous year+0.63 ppb
Rank of increase22 / 24
Max − min within year0.63 ppb
By month
| Month | Concentration | vs same month last year |
|---|---|---|
| Jan | 318.18 ppb | +0.89 |
| Feb | 318.19 ppb | +0.85 |
| Mar | 318.16 ppb | +0.75 |
| Apr | 318.14 ppb | +0.66 |
| May | 318.14 ppb | +0.63 |
| Jun | 318.13 ppb | +0.60 |
| Jul | 318.14 ppb | +0.58 |
| Aug | 318.17 ppb | +0.54 |
| Sep | 318.22 ppb | +0.45 |
| Oct | 318.34 ppb | +0.41 |
| Nov | 318.56 ppb | +0.52 |
| Dec | 318.76 ppb | +0.65 |
+0.58 ppb
+0.69 ppb
+0.63 ppb
+0.66 ppb
+0.91 ppb
+0.62 ppb
+1.06 ppb
+0.77 ppb
Bars: yearly increase in the surrounding years. NOAA GML global monthly means.