These data were published in the followng paper: Mann, M.E., Bradley, R.S., Hughes, M.K. 1998. Global-Scale Temperature Patterns and Climate Forcing Over the Past Six Centuries, Nature, 392, 779-787. Here is the abstract to the paper: Reconstructions of annual global surface temperature patterns over several centuries are now possible, based on the multivariate calibration of widely distributed high-resolution proxy climate indicators. These reconstructions provide insight into both the spatial and temporal nature of climatic variations during the past six centuries. Time-dependent correlations of these temperature reconstructions with time series representing greenhouse gases, solar irradiance, and volcanic aerosols, suggest that each of these forcings has played a role in the climatic variability of the past several centuries, with greenhouse gases appearing to emerge as the dominant forcing during the 20th century. Northern hemisphere mean annual temperatures for three of the past eight years are warmer than any other year since (at least) 1400 AD, at a greater than 99.5\% level of confidence. Year Recon. Instrum. 1400 -0.305 1401 -0.239 1402 -0.132 1403 -0.092 1404 -0.217 1405 -0.152 1406 -0.050 1407 -0.113 1408 -0.102 1409 -0.086 1410 -0.109 1411 -0.076 1412 -0.179 1413 -0.157 1414 -0.138 1415 -0.090 1416 -0.003 1417 -0.081 1418 -0.106 1419 -0.147 1420 -0.164 1421 -0.286 1422 -0.141 1423 -0.080 1424 -0.016 1425 -0.127 1426 -0.074 1427 -0.208 1428 -0.154 1429 -0.182 1430 -0.122 1431 -0.201 1432 -0.177 1433 -0.046 1434 -0.097 1435 -0.032 1436 -0.029 1437 -0.009 1438 -0.145 1439 -0.176 1440 -0.040 1441 0.015 1442 -0.093 1443 -0.020 1444 -0.030 1445 -0.191 1446 -0.194 1447 -0.111 1448 -0.188 1449 -0.234 1450 -0.251 1451 -0.200 1452 -0.149 1453 -0.238 1454 -0.317 1455 -0.316 1456 -0.354 1457 -0.327 1458 -0.413 1459 -0.387 1460 -0.342 1461 -0.390 1462 -0.459 1463 -0.331 1464 -0.456 1465 -0.382 1466 -0.339 1467 -0.347 1468 -0.400 1469 -0.315 1470 -0.282 1471 -0.415 1472 -0.400 1473 -0.353 1474 -0.153 1475 -0.324 1476 -0.241 1477 -0.193 1478 -0.200 1479 -0.136 1480 -0.152 1481 -0.132 1482 -0.256 1483 -0.186 1484 -0.091 1485 -0.091 1486 -0.173 1487 -0.171 1488 -0.106 1489 -0.079 1490 -0.100 1491 -0.073 1492 -0.272 1493 -0.081 1494 -0.130 1495 -0.224 1496 -0.308 1497 -0.346 1498 -0.233 1499 -0.219 1500 -0.191 1501 -0.204 1502 -0.259 1503 -0.108 1504 -0.096 1505 -0.177 1506 -0.173 1507 -0.066 1508 -0.043 1509 -0.012 1510 0.063 1511 0.031 1512 -0.056 1513 -0.167 1514 -0.123 1515 -0.159 1516 -0.074 1517 -0.133 1518 -0.263 1519 -0.206 1520 -0.144 1521 -0.099 1522 -0.232 1523 -0.121 1524 -0.107 1525 -0.046 1526 -0.088 1527 -0.033 1528 -0.195 1529 -0.173 1530 -0.045 1531 -0.017 1532 -0.077 1533 -0.158 1534 -0.161 1535 -0.059 1536 -0.112 1537 -0.157 1538 -0.196 1539 -0.059 1540 -0.144 1541 -0.179 1542 -0.112 1543 -0.195 1544 -0.172 1545 -0.133 1546 -0.067 1547 -0.219 1548 -0.210 1549 -0.224 1550 -0.165 1551 -0.147 1552 -0.162 1553 -0.179 1554 -0.052 1555 -0.055 1556 -0.030 1557 -0.118 1558 -0.199 1559 -0.105 1560 -0.136 1561 -0.168 1562 -0.091 1563 0.004 1564 0.039 1565 -0.017 1566 0.022 1567 -0.109 1568 -0.029 1569 -0.067 1570 -0.067 1571 -0.081 1572 -0.159 1573 -0.173 1574 -0.020 1575 -0.126 1576 -0.114 1577 -0.224 1578 -0.294 1579 -0.295 1580 -0.233 1581 -0.176 1582 -0.092 1583 -0.129 1584 -0.111 1585 -0.126 1586 -0.199 1587 -0.282 1588 -0.227 1589 -0.239 1590 -0.297 1591 -0.298 1592 -0.203 1593 -0.160 1594 -0.178 1595 -0.224 1596 -0.167 1597 -0.148 1598 -0.155 1599 -0.155 1600 -0.129 1601 -0.366 1602 -0.194 1603 -0.250 1604 -0.268 1605 -0.168 1606 -0.263 1607 -0.199 1608 -0.223 1609 -0.152 1610 -0.102 1611 -0.232 1612 -0.192 1613 -0.124 1614 -0.226 1615 -0.208 1616 -0.143 1617 -0.063 1618 -0.080 1619 -0.035 1620 -0.033 1621 -0.075 1622 -0.165 1623 -0.249 1624 -0.189 1625 -0.248 1626 -0.344 1627 -0.252 1628 -0.166 1629 -0.179 1630 -0.118 1631 -0.260 1632 -0.073 1633 -0.156 1634 -0.024 1635 0.003 1636 0.086 1637 -0.089 1638 -0.149 1639 -0.138 1640 -0.022 1641 -0.281 1642 -0.382 1643 -0.193 1644 -0.256 1645 -0.207 1646 -0.200 1647 -0.206 1648 -0.149 1649 -0.164 1650 -0.107 1651 -0.118 1652 -0.061 1653 -0.082 1654 -0.130 1655 -0.040 1656 -0.017 1657 -0.024 1658 -0.058 1659 -0.100 1660 -0.121 1661 -0.095 1662 -0.100 1663 -0.196 1664 -0.297 1665 -0.258 1666 -0.132 1667 -0.329 1668 -0.263 1669 -0.305 1670 -0.208 1671 -0.167 1672 -0.294 1673 -0.383 1674 -0.305 1675 -0.293 1676 -0.345 1677 -0.195 1678 -0.299 1679 -0.298 1680 -0.339 1681 -0.125 1682 -0.176 1683 -0.264 1684 -0.255 1685 -0.278 1686 -0.247 1687 -0.164 1688 -0.244 1689 -0.072 1690 -0.057 1691 -0.072 1692 -0.160 1693 -0.095 1694 -0.063 1695 -0.225 1696 -0.372 1697 -0.259 1698 -0.347 1699 -0.362 1700 -0.393 1701 -0.315 1702 -0.172 1703 -0.189 1704 -0.236 1705 -0.362 1706 -0.269 1707 -0.145 1708 -0.172 1709 -0.196 1710 -0.176 1711 -0.237 1712 -0.255 1713 -0.211 1714 -0.264 1715 -0.187 1716 -0.257 1717 -0.241 1718 -0.145 1719 -0.161 1720 -0.084 1721 -0.096 1722 -0.077 1723 0.057 1724 -0.028 1725 -0.273 1726 -0.063 1727 -0.014 1728 -0.190 1729 -0.050 1730 -0.102 1731 -0.165 1732 -0.252 1733 -0.176 1734 -0.257 1735 -0.121 1736 -0.113 1737 -0.117 1738 -0.141 1739 -0.093 1740 -0.082 1741 -0.081 1742 -0.225 1743 -0.251 1744 -0.275 1745 -0.199 1746 -0.255 1747 -0.181 1748 -0.058 1749 -0.006 1750 -0.121 1751 -0.138 1752 -0.145 1753 -0.149 1754 -0.116 1755 -0.156 1756 -0.032 1757 -0.171 1758 -0.140 1759 -0.021 1760 0.037 1761 -0.144 1762 -0.037 1763 -0.166 1764 -0.231 1765 -0.076 1766 -0.048 1767 0.022 1768 -0.063 1769 -0.219 1770 0.091 1771 0.012 1772 0.122 1773 -0.041 1774 0.044 1775 0.052 1776 -0.011 1777 -0.112 1778 -0.086 1779 -0.184 1780 -0.206 1781 -0.059 1782 -0.251 1783 -0.091 1784 -0.128 1785 -0.267 1786 -0.266 1787 -0.262 1788 -0.120 1789 -0.166 1790 -0.265 1791 -0.062 1792 -0.018 1793 -0.078 1794 0.027 1795 -0.117 1796 -0.098 1797 -0.192 1798 -0.097 1799 -0.180 1800 -0.076 1801 -0.098 1802 -0.168 1803 -0.254 1804 -0.032 1805 -0.182 1806 -0.050 1807 -0.142 1808 -0.079 1809 -0.162 1810 -0.131 1811 -0.127 1812 -0.239 1813 -0.257 1814 -0.274 1815 -0.262 1816 -0.325 1817 -0.340 1818 -0.259 1819 -0.318 1820 -0.442 1821 -0.211 1822 -0.217 1823 -0.247 1824 -0.269 1825 -0.205 1826 -0.055 1827 -0.149 1828 -0.109 1829 -0.164 1830 -0.140 1831 -0.119 1832 -0.237 1833 -0.119 1834 0.064 1835 -0.307 1836 -0.214 1837 -0.370 1838 -0.425 1839 -0.216 1840 -0.375 1841 -0.198 1842 -0.364 1843 -0.245 1844 -0.245 1845 -0.312 1846 -0.088 1847 -0.276 1848 -0.204 1849 -0.297 1850 -0.245 1851 -0.287 1852 -0.136 1853 -0.227 1854 -0.255 1855 -0.170 1856 -0.097 1857 -0.160 1858 -0.257 1859 -0.126 1860 -0.286 1861 -0.195 1862 -0.192 1863 -0.137 1864 -0.389 1865 -0.140 1866 -0.197 1867 -0.203 1868 -0.167 1869 -0.233 1870 -0.390 1871 -0.328 1872 -0.236 1873 -0.209 1874 -0.257 1875 -0.236 1876 -0.189 1877 -0.014 1878 -0.087 1879 -0.296 1880 -0.237 1881 -0.198 1882 -0.204 1883 -0.249 1884 -0.212 1885 -0.190 1886 -0.108 1887 -0.326 1888 -0.169 1889 -0.134 1890 -0.311 1891 -0.175 1892 -0.319 1893 -0.324 1894 -0.197 1895 -0.158 1896 -0.080 1897 -0.054 1898 -0.220 1899 -0.349 1900 -0.125 1901 -0.158 1902 -0.366 -0.204 1903 -0.235 -0.280 1904 -0.385 -0.351 1905 -0.199 -0.171 1906 -0.130 -0.104 1907 -0.346 -0.371 1908 -0.362 -0.360 1909 -0.411 -0.290 1910 -0.277 -0.292 1911 -0.212 -0.339 1912 -0.326 -0.344 1913 -0.229 -0.368 1914 -0.175 -0.121 1915 -0.107 0.062 1916 -0.196 -0.235 1917 -0.319 -0.392 1918 -0.213 -0.226 1919 -0.083 -0.269 1920 -0.187 -0.203 1921 -0.156 -0.112 1922 -0.280 -0.200 1923 -0.044 -0.168 1924 -0.068 -0.197 1925 -0.164 -0.026 1926 0.119 0.110 1927 -0.032 -0.004 1928 0.068 -0.014 1929 -0.170 -0.206 1930 0.153 0.090 1931 -0.017 0.134 1932 0.024 0.076 1933 -0.114 -0.121 1934 0.074 0.061 1935 0.133 -0.011 1936 0.107 0.130 1937 0.240 0.174 1938 0.188 0.230 1939 0.167 0.147 1940 0.003 0.067 1941 0.162 0.128 1942 0.104 0.118 1943 0.162 0.145 1944 0.278 0.293 1945 0.136 0.092 1946 0.136 0.155 1947 0.225 0.074 1948 0.165 0.153 1949 -0.004 0.125 1950 0.057 -0.010 1951 -0.020 0.167 1952 0.091 0.198 1953 0.028 0.313 1954 0.075 0.050 1955 0.114 0.101 1956 -0.066 -0.139 1957 0.129 0.199 1958 0.264 0.305 1959 0.189 0.203 1960 0.260 0.170 1961 0.165 0.286 1962 0.082 0.312 1963 0.138 0.293 1964 0.108 -0.009 1965 0.040 -0.026 1966 0.241 0.128 1967 0.102 0.145 1968 0.173 0.043 1969 0.189 0.053 1970 0.133 0.099 1971 -0.108 -0.058 1972 0.039 -0.063 1973 0.106 0.189 1974 -0.101 -0.089 1975 0.042 0.020 1976 0.046 -0.199 1977 0.169 0.189 1978 0.098 0.107 1979 0.257 0.226 1980 0.121 0.213 1981 0.382 1982 0.156 1983 0.399 1984 0.102 1985 0.039 1986 0.198 1987 0.359 1988 0.413 1989 0.379 1990 0.574 1991 0.424 1992 0.270 1993 0.300 1994 0.450 1995 0.660