| MONTH | NAO | EA | WP | EP-NP | PNA | TNH | EATL/WRUS | SCAND | POLEUR |
| MAR 11 | 0.6 | -0.4 | 0.0 | 0.1 | 0.7 | --- | 0.0 | -1.1 | 0.6 |
| FEB 11 | 0.7 | 0.5 | 0.4 | 0.2 | -1.6 | 1.0 | 0.8 | 0.3 | -0.3 |
| JAN 11 | -0.9 | -0.5 | -0.7 | -0.6 | 1.3 | 1.1 | -0.5 | -0.4 | -0.5 |
| DEC 10 | -1.8 | 0.1 | -1.0 | --- | -1.8 | -3.1 | -2.1 | 0.3 | 0.1 |
| NOV 10 | -1.6 | 0.6 | -0.4 | 0.4 | -0.8 | --- | -0.7 | -0.3 | 0.8 |
| OCT 10 | -0.9 | -0.3 | 0.4 | -0.7 | 1.8 | --- | -0.4 | 0.0 | -1.4 |
| SEP 10 | -0.8 | 0.8 | 0.2 | -0.9 | 1.3 | --- | -1.1 | 0.5 | 0.4 |
| AUG 10 | -1.2 | 1.9 | 0.1 | -2.4 | 1.1 | --- | -0.9 | -0.6 | 1.5 |
| JUL 10 | -0.4 | 2.8 | -2.9 | -0.2 | 1.4 | --- | -1.6 | 0.6 | 1.7 |
| JUN 10 | -0.8 | 0.5 | -0.3 | 1.2 | -0.2 | --- | -2.1 | -1.1 | 2.1 |
| MAY 10 | -1.5 | -1.2 | -3.1 | 0.0 | -0.9 | --- | -2.1 | 0.3 | -1.9 |
| APR 10 | -0.7 | 0.5 | 0.8 | -0.9 | 1.5 | --- | -0.5 | -0.5 | -0.5 |
| MAR 10 | -0.9 | 1.4 | 2.1 | -1.5 | 2.0 | --- | 0.8 | -0.5 | -1.4 |