Source,Year,Mean GCAG,1850,-0.4265 GCAG,1851,-0.2635 GCAG,1852,-0.2241 GCAG,1853,-0.2623 GCAG,1854,-0.2936 GCAG,1855,-0.2914 GCAG,1856,-0.3281 GCAG,1857,-0.4659 GCAG,1858,-0.3968 GCAG,1859,-0.292 GCAG,1860,-0.4071 GCAG,1861,-0.4637 GCAG,1862,-0.5548 GCAG,1863,-0.3828 GCAG,1864,-0.4941 GCAG,1865,-0.3922 GCAG,1866,-0.4002 GCAG,1867,-0.3994 GCAG,1868,-0.3631 GCAG,1869,-0.3185 GCAG,1870,-0.3278 GCAG,1871,-0.3734 GCAG,1872,-0.3095 GCAG,1873,-0.3212 GCAG,1874,-0.3654 GCAG,1875,-0.3667 GCAG,1876,-0.4108 GCAG,1877,-0.0824 GCAG,1878,0.0103 GCAG,1879,-0.2887 GISTEMP,1880,-0.1792 GCAG,1880,-0.3032 GISTEMP,1881,-0.0917 GCAG,1881,-0.213 GISTEMP,1882,-0.115 GCAG,1882,-0.2721 GISTEMP,1883,-0.18 GCAG,1883,-0.3276 GISTEMP,1884,-0.285 GCAG,1884,-0.4744 GISTEMP,1885,-0.3392 GCAG,1885,-0.4581 GISTEMP,1886,-0.32 GCAG,1886,-0.4082 GISTEMP,1887,-0.3667 GCAG,1887,-0.4883 GISTEMP,1888,-0.18 GCAG,1888,-0.3726 GISTEMP,1889,-0.1133 GCAG,1889,-0.2504 GISTEMP,1890,-0.3617 GCAG,1890,-0.5003 GISTEMP,1891,-0.2292 GCAG,1891,-0.3975 GISTEMP,1892,-0.2783 GCAG,1892,-0.5066 GISTEMP,1893,-0.3158 GCAG,1893,-0.4949 GISTEMP,1894,-0.3092 GCAG,1894,-0.4787 GISTEMP,1895,-0.23 GCAG,1895,-0.4418 GISTEMP,1896,-0.1192 GCAG,1896,-0.2786 GISTEMP,1897,-0.1158 GCAG,1897,-0.2547 GISTEMP,1898,-0.2817 GCAG,1898,-0.474 GISTEMP,1899,-0.1817 GCAG,1899,-0.3443 GISTEMP,1900,-0.0875 GCAG,1900,-0.2302 GISTEMP,1901,-0.1575 GCAG,1901,-0.2872 GISTEMP,1902,-0.2867 GCAG,1902,-0.4374 GISTEMP,1903,-0.3758 GCAG,1903,-0.5352 GISTEMP,1904,-0.4817 GCAG,1904,-0.5971 GISTEMP,1905,-0.27 GCAG,1905,-0.4059 GISTEMP,1906,-0.2283 GCAG,1906,-0.3154 GISTEMP,1907,-0.3892 GCAG,1907,-0.4995 GISTEMP,1908,-0.4342 GCAG,1908,-0.5066 GISTEMP,1909,-0.4933 GCAG,1909,-0.5329 GISTEMP,1910,-0.4433 GCAG,1910,-0.5221 GISTEMP,1911,-0.4508 GCAG,1911,-0.5398 GISTEMP,1912,-0.375 GCAG,1912,-0.4761 GISTEMP,1913,-0.3575 GCAG,1913,-0.4635 GISTEMP,1914,-0.1667 GCAG,1914,-0.2595 GISTEMP,1915,-0.1483 GCAG,1915,-0.1906 GISTEMP,1916,-0.365 GCAG,1916,-0.4202 GISTEMP,1917,-0.4642 GCAG,1917,-0.5439 GISTEMP,1918,-0.3025 GCAG,1918,-0.426 GISTEMP,1919,-0.2783 GCAG,1919,-0.3324 GISTEMP,1920,-0.2783 GCAG,1920,-0.3044 GISTEMP,1921,-0.1917 GCAG,1921,-0.2414 GISTEMP,1922,-0.2842 GCAG,1922,-0.3381 GISTEMP,1923,-0.2658 GCAG,1923,-0.3146 GISTEMP,1924,-0.2692 GCAG,1924,-0.3085 GISTEMP,1925,-0.2217 GCAG,1925,-0.2796 GISTEMP,1926,-0.1083 GCAG,1926,-0.1221 GISTEMP,1927,-0.22 GCAG,1927,-0.2258 GISTEMP,1928,-0.2017 GCAG,1928,-0.2084 GISTEMP,1929,-0.3625 GCAG,1929,-0.3903 GISTEMP,1930,-0.16 GCAG,1930,-0.1699 GISTEMP,1931,-0.0942 GCAG,1931,-0.1058 GISTEMP,1932,-0.1617 GCAG,1932,-0.15 GISTEMP,1933,-0.2883 GCAG,1933,-0.3283 GISTEMP,1934,-0.1283 GCAG,1934,-0.177 GISTEMP,1935,-0.2017 GCAG,1935,-0.2129 GISTEMP,1936,-0.1517 GCAG,1936,-0.171 GISTEMP,1937,-0.0333 GCAG,1937,-0.016 GISTEMP,1938,-0.0058 GCAG,1938,-0.0129 GISTEMP,1939,-0.0242 GCAG,1939,-0.0418 GISTEMP,1940,0.1217 GCAG,1940,0.0738 GISTEMP,1941,0.18 GCAG,1941,0.0344 GISTEMP,1942,0.0617 GCAG,1942,-0.0005 GISTEMP,1943,0.0858 GCAG,1943,0.0064 GISTEMP,1944,0.2017 GCAG,1944,0.1446 GISTEMP,1945,0.095 GCAG,1945,0.0429 GISTEMP,1946,-0.0725 GCAG,1946,-0.1227 GISTEMP,1947,-0.0283 GCAG,1947,-0.096 GISTEMP,1948,-0.1083 GCAG,1948,-0.1292 GISTEMP,1949,-0.1108 GCAG,1949,-0.1539 GISTEMP,1950,-0.175 GCAG,1950,-0.2397 GISTEMP,1951,-0.07 GCAG,1951,-0.0719 GISTEMP,1952,0.01 GCAG,1952,0.0108 GISTEMP,1953,0.08 GCAG,1953,0.077 GISTEMP,1954,-0.1325 GCAG,1954,-0.1175 GISTEMP,1955,-0.14 GCAG,1955,-0.1987 GISTEMP,1956,-0.1892 GCAG,1956,-0.265 GISTEMP,1957,0.0475 GCAG,1957,-0.0349 GISTEMP,1958,0.0592 GCAG,1958,-0.0165 GISTEMP,1959,0.0308 GCAG,1959,-0.0465 GISTEMP,1960,-0.025 GCAG,1960,-0.1134 GISTEMP,1961,0.0567 GCAG,1961,-0.0144 GISTEMP,1962,0.0308 GCAG,1962,-0.0588 GISTEMP,1963,0.0542 GCAG,1963,-0.0314 GISTEMP,1964,-0.1992 GCAG,1964,-0.3021 GISTEMP,1965,-0.1067 GCAG,1965,-0.2023 GISTEMP,1966,-0.0575 GCAG,1966,-0.1454 GISTEMP,1967,-0.0242 GCAG,1967,-0.1157 GISTEMP,1968,-0.0825 GCAG,1968,-0.164 GISTEMP,1969,0.0525 GCAG,1969,-0.0278 GISTEMP,1970,0.0275 GCAG,1970,-0.084 GISTEMP,1971,-0.0792 GCAG,1971,-0.2041 GISTEMP,1972,0.0092 GCAG,1972,-0.0902 GISTEMP,1973,0.1608 GCAG,1973,0.0525 GISTEMP,1974,-0.0717 GCAG,1974,-0.1687 GISTEMP,1975,-0.0133 GCAG,1975,-0.106 GISTEMP,1976,-0.0975 GCAG,1976,-0.2108 GISTEMP,1977,0.1783 GCAG,1977,0.1051 GISTEMP,1978,0.0667 GCAG,1978,0.0055 GISTEMP,1979,0.1642 GCAG,1979,0.0881 GISTEMP,1980,0.2558 GCAG,1980,0.1915 GISTEMP,1981,0.3233 GCAG,1981,0.247 GISTEMP,1982,0.1392 GCAG,1982,0.031 GISTEMP,1983,0.315 GCAG,1983,0.2208 GISTEMP,1984,0.155 GCAG,1984,0.046 GISTEMP,1985,0.1183 GCAG,1985,0.046 GISTEMP,1986,0.18 GCAG,1986,0.0923 GISTEMP,1987,0.3217 GCAG,1987,0.2382 GISTEMP,1988,0.39 GCAG,1988,0.2776 GISTEMP,1989,0.2742 GCAG,1989,0.1749 GISTEMP,1990,0.4492 GCAG,1990,0.355 GISTEMP,1991,0.4075 GCAG,1991,0.3338 GISTEMP,1992,0.2242 GCAG,1992,0.12 GISTEMP,1993,0.2333 GCAG,1993,0.1611 GISTEMP,1994,0.3158 GCAG,1994,0.2274 GISTEMP,1995,0.4475 GCAG,1995,0.3711 GISTEMP,1996,0.3342 GCAG,1996,0.2708 GISTEMP,1997,0.4675 GCAG,1997,0.4151 GISTEMP,1998,0.6092 GCAG,1998,0.572 GISTEMP,1999,0.3825 GCAG,1999,0.318 GISTEMP,2000,0.3933 GCAG,2000,0.3255 GISTEMP,2001,0.5333 GCAG,2001,0.4835 GISTEMP,2002,0.6275 GCAG,2002,0.5372 GISTEMP,2003,0.6167 GCAG,2003,0.5383 GISTEMP,2004,0.5342 GCAG,2004,0.4624 GISTEMP,2005,0.6792 GCAG,2005,0.6023 GISTEMP,2006,0.6408 GCAG,2006,0.5663 GISTEMP,2007,0.6642 GCAG,2007,0.5855 GISTEMP,2008,0.5433 GCAG,2008,0.4592 GISTEMP,2009,0.6558 GCAG,2009,0.59 GISTEMP,2010,0.7242 GCAG,2010,0.6736 GISTEMP,2011,0.6075 GCAG,2011,0.5326 GISTEMP,2012,0.6467 GCAG,2012,0.5715 GISTEMP,2013,0.6767 GCAG,2013,0.6186 GISTEMP,2014,0.7492 GCAG,2014,0.6679 GISTEMP,2015,0.8983 GCAG,2015,0.818 GISTEMP,2016,1.0125 GCAG,2016,0.9248 GISTEMP,2017,0.915 GCAG,2017,0.8365 GISTEMP,2018,0.8508 GCAG,2018,0.7532 GISTEMP,2019,0.98 GCAG,2019,0.8873 GISTEMP,2020,1.0075 GCAG,2020,0.9162 GISTEMP,2021,0.8492 GCAG,2021,0.7673 GISTEMP,2022,0.8925 GCAG,2022,0.8018 GISTEMP,2023,1.1725 GCAG,2023,1.1098 GISTEMP,2024,1.2858 GCAG,2024,1.169 GISTEMP,2025,1.1933 GCAG,2025,1.048 GCAG,2026,1.0421