Monthly and Annual Means of the 1st Principal Component of the position of the North Wall of the Gulf Stream 1966-2001. NOTE: Month to month variability in the data is high because of Gulf Stream meandering. It is therefore advisable to use either annual mean values or averages over several months.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
| 1966 | 0.926 | -1.504 | -0.369 | -1.182 | -0.727 | 0.829 | 3.151 | 1.257 | 4.461 | -0.166 | 0.586 | 0.872 | 0.678 |
| 1967 | -0.955 | -0.497 | -1.625 | -1.088 | -1.002 | -0.682 | 2.165 | -0.476 | -0.258 | -0.922 | 2.527 | -0.897 | -0.309 |
| 1968 | -0.951 | 1.459 | -0.214 | -2.064 | 2.152 | 0.161 | -1.833 | -1.108 | 0.655 | 1.23 | 2.54 | 3.382 | 0.451 |
| 1969 | 0.883 | 0.567 | 1.255 | -0.975 | 0.1 | -1.151 | -1.135 | -2.508 | -2.977 | -0.197 | -2.453 | 0.13 | -0.705 |
| 1970 | -2.105 | -2.793 | -1.826 | -0.087 | 0.077 | 1.881 | -0.355 | -2.322 | -2.276 | -1.172 | -1.175 | -0.375 | -1.044 |
| 1971 | -1.044 | -1.632 | -1.821 | -2.534 | -1.373 | -0.055 | -5.242 | -3.097 | -1.805 | -1.807 | -1.991 | -0.757 | -1.93 |
| 1972 | -0.144 | -1.305 | -0.193 | -2.165 | -2.157 | -2.691 | 0.208 | -1.869 | -2.174 | -2.938 | -0.025 | 0.024 | -1.286 |
| 1973 | -2.219 | -1.273 | -1.384 | -0.605 | -3.442 | -2.013 | -2.064 | -0.332 | -0.18 | -0.643 | 0.142 | -0.2 | -1.184 |
| 1974 | 0.867 | -3.041 | -1.243 | 0.186 | -0.083 | -0.839 | -1.55 | -1.217 | 0.501 | -0.246 | -0.905 | -0.142 | -0.643 |
| 1975 | 0.184 | -0.78 | 1.007 | 1.247 | -1.357 | -1.145 | 1.739 | 3.333 | -0.258 | -0.833 | -2.405 | 0.243 | 0.081 |
| 1976 | -0.305 | -2.29 | -4.588 | -0.714 | -0.147 | 0.336 | -0.722 | -0.857 | -1.345 | 0.999 | 0.078 | 0.831 | -0.727 |
| 1977 | 1.956 | -0.463 | 1.822 | 0.929 | -2.514 | 0.609 | -0.896 | -0.923 | -0.095 | -0.329 | -0.808 | 0.231 | -0.04 |
| 1978 | -0.031 | -2.703 | 0.653 | 0.172 | -2.74 | -3.062 | 0.07 | -1.482 | -0.41 | -0.316 | -0.898 | -1.348 | -1.008 |
| 1979 | -3.618 | -2.691 | -2.841 | -1.458 | -1.506 | 0.397 | -0.496 | -2.056 | -0.345 | -2.079 | -2.049 | -0.363 | -1.592 |
| 1980 | -1.007 | 1.241 | 1.604 | -1.37 | -0.265 | -2.034 | 1.082 | -2.703 | 0.87 | 2.089 | -0.34 | -1.707 | -0.212 |
| 1981 | -2.035 | 0.474 | -1.157 | -2.782 | -0.283 | -0.918 | 0.254 | -0.348 | -0.078 | 2.633 | -1.408 | -1.519 | -0.597 |
| 1982 | 0.677 | -1.846 | -1.238 | -2.774 | -1.358 | -1.332 | -1.817 | -0.603 | -2.586 | 0.053 | 0.394 | -1.398 | -1.152 |
| 1983 | -0.648 | -1.53 | 0.207 | -0.676 | -1.502 | -1.209 | -1.02 | 3.461 | 0.923 | -0.517 | 0.595 | 1.154 | -0.064 |
| 1984 | 0.874 | 1.063 | 0.729 | 0.618 | -0.725 | -1.38 | -2.477 | 3.18 | -0.374 | 1.63 | 1.997 | 1.818 | 0.579 |
| 1985 | 1.491 | 0.656 | -0.293 | 1.733 | 3.357 | 1.412 | 1.137 | 0.778 | 1.522 | 4.568 | 0.574 | 0.217 | 1.429 |
| 1986 | 2.661 | -1.298 | -1.617 | -0.95 | -1.067 | 0.446 | -0.128 | -1.824 | -0.666 | 1.263 | 1.428 | 0.064 | -0.141 |
| 1987 | -2.381 | -1.217 | -2.76 | -1.865 | -0.637 | -0.299 | 0.409 | 0.86 | 1.58 | 0.799 | 0.11 | -0.547 | -0.495 |
| 1988 | -1.392 | 1.659 | 0.153 | -0.282 | -0.9 | -1.191 | 0.408 | -0.274 | 2.1 | 0.666 | 0.4 | -0.025 | 0.11 |
| 1989 | -1.07 | 0.208 | 0.582 | 1.174 | 1.273 | 0.569 | -0.38 | -1.571 | -0.028 | 0.623 | 1.284 | 2.323 | 0.416 |
| 1990 | 1.992 | 1.509 | 0.487 | 0.851 | 0.576 | -1.202 | -0.247 | 1.079 | 0.99 | 0.818 | 1.247 | 0.749 | 0.737 |
| 1991 | 0.222 | 0.139 | -0.336 | 0.346 | 1.578 | 2.273 | 1.662 | 1.801 | 2.943 | 2.418 | 0.852 | 1.587 | 1.29 |
| 1992 | 2.118 | 0.888 | 1.483 | 0.623 | 0.971 | 0.108 | 0.553 | 0.624 | 0.994 | 0.577 | 0.765 | 3.328 | 1.086 |
| 1993 | -0.541 | 1.217 | -2.516 | 0.045 | 1.122 | 1.128 | -0.013 | 1.679 | 2.028 | 2.01 | 2.534 | 1.287 | 0.832 |
| 1994 | 2.582 | 2.306 | 2.012 | 1.2 | 0.749 | 2.225 | 1.386 | 0.872 | 0.188 | 0.24 | -0.858 | 4.765 | 1.472 |
| 1995 | 4.872 | 3.079 | 1.675 | 0.893 | 0.778 | 2.555 | 1.679 | 3.058 | 2.549 | 2.612 | 2.346 | -0.096 | 2.167 |
| 1996 | 2.515 | 0.496 | 2.026 | -0.355 | -0.952 | -1.043 | -0.429 | -1.14 | 0.697 | 0.109 | -0.795 | -1.96 | -0.069 |
| 1997 | -0.381 | -0.468 | -1.56 | -0.335 | 0.788 | -0.499 | 0.921 | -0.576 | -0.752 | -0.478 | -1.258 | 0.403 | -0.349 |
| 1998 | 1.028 | 0.132 | 0.144 | -3.384 | -2.431 | -0.806 | -1.074 | -0.995 | 0.573 | 0.357 | -2.136 | -0.047 | -0.72 |
| 1999 | -0.255 | -0.426 | -0.861 | -0.681 | -0.201 | -0.35 | 0.86 | -0.295 | 3.331 | -0.423 | 0.386 | -0.076 | 0.084 |
| 2000 | -3.245 | -1.164 | -0.798 | -0.441 | -0.39 | 0.023 | -0.379 | 0.026 | 3.085 | 1.661 | 0.695 | -0.106 | -0.086 |
| 2001 | 1.185 | 1.846 | 0.314 | 0.496 | 0.553 | -1.934 | 2.395 | 2.129 | 2.188 | -1.505 | 1.185 | 2.152 | 0.917 |