| Year | Casey | Palmer | South Pole | Halley | Syowa | Zhongshan | Global |
| 2008 | 1740.3 | 1740.6 | 1742.7 | 1739.9 | 1740.2 | 1742.5 | 1798.0 |
| 2009 | 1743.4 | 1743.0 | 1744.0 | 1743.8 | 1744.0 | 1744.9 | 1803.0 |
| 2010 | 1749.2 | 1750.2 | 1750.5 | 1749.1 | 1748.6 | 1750.1 | 1808.0 |
| 2011 | 1757.6 | 1757.0 | 1758.6 | 1755.3 | 1756.3 | 1757.6 | 1813.0 |
| 2012 | 1762.0 | 1760.9 | 1762.7 | 1761.3 | 1761.7 | 1762.3 | 1819.0 |
| 2013 | 1766.3 | 1765.3 | 1766.2 | 1765.5 | 1764.8 | 1764.9 | 1824.0 |
| 2008-2009 | 3.1 (0.18%) | 2.4 (0.14%) | 1.2 (0.07%) | 4.0 (0.23%) | 3.8 (0.22%) | 2.3 (0.13%) | 5.0 (0.28%) |
| 2009-2010 | 5.8 (0.33%) | 7.2 (0.41%) | 6.6 (0.38%) | 5.3 (0.30%) | 4.7 (0.27%) | 5.3 (0.30%) | 5.0 (0.28%) |
| 2010-2011 | 8.4 (0.48%) | 6.8 (0.39%) | 8.0 (0.46%) | 6.2 (0.35%) | 7.7 (0.44%) | 7.5 (0.43%) | 5.0 (0.28%) |
| 2011-2012 | 4.4 (0.25%) | 3.9 (0.22%) | 4.2 (0.24%) | 6.0 (0.34%) | 5.4 (0.31%) | 4.7 (0.27%) | 6.0 (0.33%) |
| 2012-2013 | 4.3 (0.25%) | 4.4 (0.25%) | 3.5 (0.20%) | 4.2 (0.24%) | 3.0 (0.17%) | 2.6 (0.15%) | (0.27%) |