Climate TrendsHome › Greenhouse gases › Sulfur hexafluoride (SF₆)
Sulfur hexafluoride (SF₆) in 1999 (global mean)
Annual mean4.39 ppt
vs previous year+0.18 ppt
Rank of increase27 / 27
Max − min within year0.15 ppt
By month
| Month | Concentration | vs same month last year |
|---|---|---|
| Jan | 4.33 ppt | +0.22 |
| Feb | 4.35 ppt | +0.22 |
| Mar | 4.36 ppt | +0.21 |
| Apr | 4.36 ppt | +0.18 |
| May | 4.35 ppt | +0.16 |
| Jun | 4.36 ppt | +0.16 |
| Jul | 4.37 ppt | +0.16 |
| Aug | 4.38 ppt | +0.16 |
| Sep | 4.40 ppt | +0.16 |
| Oct | 4.43 ppt | +0.16 |
| Nov | 4.46 ppt | +0.17 |
| Dec | 4.48 ppt | +0.17 |
+0.18 ppt
+0.20 ppt
+0.19 ppt
+0.20 ppt
+0.25 ppt
+0.23 ppt
Bars: yearly increase in the surrounding years. NOAA GML global monthly means.