| Year | mean[F] | min[F] | max[F] | sdev[F] | mean[K] | min[K] | max[K] | sdev[K] | mean[C] | min[C] | max[C] | sdev[C] |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1991 | 16.985 | 3.476 | 55.217 | 13.141 | 20.664 | 6.543 | 48.406 | 8.385 | 14.967 | 1.221 | 28.201 | 5.087 |
| 1992 | 15.782 | 3.020 | 55.217 | 12.551 | 20.785 | 6.924 | 48.397 | 9.553 | 15.697 | 2.048 | 30.371 | 5.503 |
| 1993 | 15.723 | 3.403 | 53.926 | 13.012 | 19.674 | 5.278 | 44.489 | 9.250 | 15.742 | 2.148 | 29.488 | 5.327 |
| 1994 | 15.121 | 3.098 | 56.038 | 13.305 | 21.006 | 4.685 | 42.084 | 7.972 | 15.737 | 1.769 | 31.554 | 6.429 |
| 1995 | 15.106 | 2.627 | 57.480 | 14.521 | 19.475 | 5.573 | 37.882 | 7.523 | 14.462 | 1.166 | 30.054 | 5.902 |
| 1996 | 14.427 | 2.388 | 59.957 | 14.209 | 18.921 | 6.779 | 39.085 | 6.958 | 14.194 | 0.911 | 29.438 | 5.590 |
| 1997 | 15.467 | 2.651 | 61.851 | 15.262 | 18.500 | −2.424 | 38.478 | 7.908 | 14.416 | 0.913 | 29.545 | 5.884 |
| 1998 | 16.404 | 2.558 | 66.452 | 16.224 | 20.033 | 4.884 | 40.615 | 8.762 | 14.936 | 1.376 | 31.237 | 6.083 |
| 1999 | 16.517 | 2.007 | 66.266 | 16.520 | 19.335 | 0.293 | 58.188 | 10.468 | 14.836 | 1.383 | 27.411 | 5.476 |
| 2000 | 17.194 | 2.032 | 67.336 | 17.143 | 18.324 | 1.097 | 43.806 | 8.341 | 15.427 | 2.123 | 42.208 | 6.596 |
| 2001 | 17.312 | 0.403 | 74.433 | 17.634 | 19.782 | 4.468 | 40.660 | 8.445 | 15.294 | 1.991 | 41.620 | 6.171 |
| 2002 | 18.745 | 1.453 | 84.052 | 19.532 | 18.891 | 3.949 | 60.156 | 10.620 | 15.138 | 1.340 | 47.192 | 6.907 |
| 2003 | 18.917 | 0.738 | 70.592 | 18.237 | 19.123 | 6.405 | 52.122 | 8.904 | 15.203 | 0.952 | 44.313 | 6.587 |
| 2004 | 18.022 | 0.935 | 70.843 | 17.641 | 19.780 | 4.509 | 35.254 | 7.628 | 15.120 | 4.788 | 38.934 | 5.911 |
| 2005 | 18.323 | 1.344 | 72.803 | 18.140 | 20.499 | 1.525 | 48.905 | 7.918 | 14.379 | 4.157 | 34.592 | 5.149 |
| 2006 | 18.455 | 2.068 | 73.625 | 18.036 | 20.030 | 1.571 | 30.902 | 6.420 | 13.713 | 4.573 | 39.451 | 5.772 |
| 2007 | 19.628 | 2.398 | 78.294 | 18.669 | 20.787 | 7.110 | 34.470 | 6.690 | 13.749 | 3.208 | 35.287 | 5.578 |
| 2008 | 20.782 | 3.051 | 81.762 | 19.186 | 22.442 | 5.128 | 39.089 | 8.489 | 13.485 | 2.047 | 27.386 | 4.817 |
| 2009 | 21.165 | 3.919 | 80.046 | 18.710 | 22.541 | 8.697 | 46.876 | 8.515 | 14.197 | 6.636 | 28.856 | 4.988 |
| 2010 | 22.012 | 4.220 | 85.278 | 19.006 | 23.701 | 10.785 | 41.432 | 7.969 | 14.182 | 6.735 | 27.288 | 4.850 |
| 2011 | 23.061 | 4.820 | 89.258 | 19.533 | 23.096 | 4.704 | 42.037 | 9.133 | 14.683 | 6.484 | 27.433 | 4.873 |
| 2012 | 23.737 | 5.779 | 98.800 | 20.408 | 23.979 | 6.699 | 49.529 | 10.349 | 14.717 | 6.876 | 27.481 | 4.958 |
| 2013 | 24.673 | 4.715 | 106.260 | 20.948 | 23.656 | 7.224 | 53.988 | 10.670 | 14.771 | 7.122 | 28.015 | 5.052 |
| 2014 | 25.213 | 4.843 | 98.732 | 20.089 | 24.484 | 9.639 | 52.855 | 10.419 | 15.241 | 6.226 | 27.904 | 5.331 |
| 2015 | 25.693 | 5.258 | 102.675 | 20.579 | 23.750 | 8.086 | 50.781 | 10.000 | 15.284 | 5.145 | 27.381 | 5.224 |
| 2016 | 25.832 | 5.716 | 96.238 | 20.004 | 23.014 | 7.823 | 50.778 | 9.841 | 15.113 | 4.212 | 27.130 | 5.538 |
| 2017 | 25.441 | 4.990 | 102.343 | 20.624 | 22.405 | 8.806 | 48.049 | 8.809 | 14.997 | 4.325 | 25.912 | 5.678 |
| 2018 | 24.535 | 3.935 | 78.226 | 18.451 | 22.567 | 6.155 | 49.026 | 9.946 | 14.854 | 3.603 | 26.210 | 5.738 |
| Year | mean[F] | min[F] | max[F] | sdev[F] | mean[K] | min[K] | max[K] | sdev[K] | mean[C] | min[C] | max[C] | sdev[C] |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1991 | 16.985 | 3.476 | 55.217 | 13.141 | 20.664 | 6.543 | 48.406 | 8.385 | 14.967 | 1.221 | 28.201 | 5.087 |
| 1992 | 15.782 | 3.020 | 55.217 | 12.551 | 20.785 | 6.924 | 48.397 | 9.553 | 15.697 | 2.048 | 30.371 | 5.503 |
| 1993 | 15.723 | 3.403 | 53.926 | 13.012 | 19.674 | 5.278 | 44.489 | 9.250 | 15.742 | 2.148 | 29.488 | 5.327 |
| 1994 | 15.121 | 3.098 | 56.038 | 13.305 | 21.006 | 4.685 | 42.084 | 7.972 | 15.737 | 1.769 | 31.554 | 6.429 |
| 1995 | 15.106 | 2.627 | 57.480 | 14.521 | 19.475 | 5.573 | 37.882 | 7.523 | 14.462 | 1.166 | 30.054 | 5.902 |
| 1996 | 14.427 | 2.388 | 59.957 | 14.209 | 18.921 | 6.779 | 39.085 | 6.958 | 14.194 | 0.911 | 29.438 | 5.590 |
| 1997 | 15.467 | 2.651 | 61.851 | 15.262 | 18.500 | −2.424 | 38.478 | 7.908 | 14.416 | 0.913 | 29.545 | 5.884 |
| 1998 | 16.404 | 2.558 | 66.452 | 16.224 | 20.033 | 4.884 | 40.615 | 8.762 | 14.936 | 1.376 | 31.237 | 6.083 |
| 1999 | 16.517 | 2.007 | 66.266 | 16.520 | 19.335 | 0.293 | 58.188 | 10.468 | 14.836 | 1.383 | 27.411 | 5.476 |
| 2000 | 17.194 | 2.032 | 67.336 | 17.143 | 18.324 | 1.097 | 43.806 | 8.341 | 15.427 | 2.123 | 42.208 | 6.596 |
| 2001 | 17.312 | 0.403 | 74.433 | 17.634 | 19.782 | 4.468 | 40.660 | 8.445 | 15.294 | 1.991 | 41.620 | 6.171 |
| 2002 | 18.745 | 1.453 | 84.052 | 19.532 | 18.891 | 3.949 | 60.156 | 10.620 | 15.138 | 1.340 | 47.192 | 6.907 |
| 2003 | 18.917 | 0.738 | 70.592 | 18.237 | 19.123 | 6.405 | 52.122 | 8.904 | 15.203 | 0.952 | 44.313 | 6.587 |
| 2004 | 18.022 | 0.935 | 70.843 | 17.641 | 19.780 | 4.509 | 35.254 | 7.628 | 15.120 | 4.788 | 38.934 | 5.911 |
| 2005 | 18.323 | 1.344 | 72.803 | 18.140 | 20.499 | 1.525 | 48.905 | 7.918 | 14.379 | 4.157 | 34.592 | 5.149 |
| 2006 | 18.455 | 2.068 | 73.625 | 18.036 | 20.030 | 1.571 | 30.902 | 6.420 | 13.713 | 4.573 | 39.451 | 5.772 |
| 2007 | 19.628 | 2.398 | 78.294 | 18.669 | 20.787 | 7.110 | 34.470 | 6.690 | 13.749 | 3.208 | 35.287 | 5.578 |
| 2008 | 20.782 | 3.051 | 81.762 | 19.186 | 22.442 | 5.128 | 39.089 | 8.489 | 13.485 | 2.047 | 27.386 | 4.817 |
| 2009 | 21.165 | 3.919 | 80.046 | 18.710 | 22.541 | 8.697 | 46.876 | 8.515 | 14.197 | 6.636 | 28.856 | 4.988 |
| 2010 | 22.012 | 4.220 | 85.278 | 19.006 | 23.701 | 10.785 | 41.432 | 7.969 | 14.182 | 6.735 | 27.288 | 4.850 |
| 2011 | 23.061 | 4.820 | 89.258 | 19.533 | 23.096 | 4.704 | 42.037 | 9.133 | 14.683 | 6.484 | 27.433 | 4.873 |
| 2012 | 23.737 | 5.779 | 98.800 | 20.408 | 23.979 | 6.699 | 49.529 | 10.349 | 14.717 | 6.876 | 27.481 | 4.958 |
| 2013 | 24.673 | 4.715 | 106.260 | 20.948 | 23.656 | 7.224 | 53.988 | 10.670 | 14.771 | 7.122 | 28.015 | 5.052 |
| 2014 | 25.213 | 4.843 | 98.732 | 20.089 | 24.484 | 9.639 | 52.855 | 10.419 | 15.241 | 6.226 | 27.904 | 5.331 |
| 2015 | 25.693 | 5.258 | 102.675 | 20.579 | 23.750 | 8.086 | 50.781 | 10.000 | 15.284 | 5.145 | 27.381 | 5.224 |
| 2016 | 25.832 | 5.716 | 96.238 | 20.004 | 23.014 | 7.823 | 50.778 | 9.841 | 15.113 | 4.212 | 27.130 | 5.538 |
| 2017 | 25.441 | 4.990 | 102.343 | 20.624 | 22.405 | 8.806 | 48.049 | 8.809 | 14.997 | 4.325 | 25.912 | 5.678 |
| 2018 | 24.535 | 3.935 | 78.226 | 18.451 | 22.567 | 6.155 | 49.026 | 9.946 | 14.854 | 3.603 | 26.210 | 5.738 |
Source(s): Appendix by author
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