Year	MBH	NGDC	diff
1400	NA	NA	NA
1401	NA	NA	NA
1402	NA	NA	NA
1403	NA	NA	NA
1404	NA	NA	NA
1405	NA	NA	NA
1406	NA	NA	NA
1407	NA	NA	NA
1408	NA	NA	NA
1409	NA	NA	NA
1410	NA	NA	NA
1411	NA	NA	NA
1412	NA	NA	NA
1413	NA	NA	NA
1414	NA	NA	NA
1415	NA	NA	NA
1416	NA	NA	NA
1417	NA	NA	NA
1418	NA	NA	NA
1419	NA	NA	NA
1420	NA	NA	NA
1421	NA	NA	NA
1422	NA	NA	NA
1423	NA	NA	NA
1424	NA	NA	NA
1425	NA	NA	NA
1426	NA	NA	NA
1427	NA	NA	NA
1428	NA	NA	NA
1429	NA	NA	NA
1430	NA	NA	NA
1431	NA	NA	NA
1432	NA	NA	NA
1433	NA	NA	NA
1434	NA	NA	NA
1435	NA	NA	NA
1436	NA	NA	NA
1437	NA	NA	NA
1438	NA	NA	NA
1439	NA	NA	NA
1440	NA	NA	NA
1441	NA	NA	NA
1442	NA	NA	NA
1443	NA	NA	NA
1444	NA	NA	NA
1445	NA	NA	NA
1446	NA	NA	NA
1447	NA	NA	NA
1448	NA	NA	NA
1449	NA	NA	NA
1450	NA	NA	NA
1451	NA	NA	NA
1452	NA	NA	NA
1453	NA	NA	NA
1454	NA	NA	NA
1455	NA	NA	NA
1456	NA	NA	NA
1457	NA	NA	NA
1458	NA	NA	NA
1459	NA	NA	NA
1460	NA	NA	NA
1461	NA	NA	NA
1462	NA	NA	NA
1463	NA	NA	NA
1464	NA	NA	NA
1465	NA	NA	NA
1466	NA	NA	NA
1467	NA	NA	NA
1468	NA	NA	NA
1469	NA	NA	NA
1470	NA	NA	NA
1471	NA	NA	NA
1472	NA	NA	NA
1473	NA	NA	NA
1474	NA	NA	NA
1475	NA	1168	NA
1476	NA	987	NA
1477	NA	1105	NA
1478	NA	1040	NA
1479	NA	964	NA
1480	NA	1063	NA
1481	NA	970	NA
1482	NA	1164	NA
1483	NA	1041	NA
1484	NA	926	NA
1485	NA	875	NA
1486	NA	892	NA
1487	NA	969	NA
1488	NA	971	NA
1489	NA	990	NA
1490	NA	987	NA
1491	NA	879	NA
1492	NA	893	NA
1493	NA	1126	NA
1494	NA	1062	NA
1495	NA	854	NA
1496	NA	986	NA
1497	NA	936	NA
1498	NA	918	NA
1499	NA	1088	NA
1500	NA	851	NA
1501	NA	802	NA
1502	NA	903	NA
1503	NA	865	NA
1504	NA	1103	NA
1505	NA	1052	NA
1506	NA	1175	NA
1507	NA	1242	NA
1508	NA	1148	NA
1509	NA	953	NA
1510	NA	992	NA
1511	NA	910	NA
1512	NA	961	NA
1513	NA	794	NA
1514	NA	1099	NA
1515	NA	925	NA
1516	NA	914	NA
1517	NA	924	NA
1518	NA	1025	NA
1519	NA	972	NA
1520	NA	1086	NA
1521	NA	936	NA
1522	NA	998	NA
1523	NA	893	NA
1524	NA	974	NA
1525	NA	1050	NA
1526	NA	1009	NA
1527	NA	1220	NA
1528	NA	1089	NA
1529	NA	1278	NA
1530	NA	1294	NA
1531	NA	1305	NA
1532	NA	1070	NA
1533	NA	1023	NA
1534	NA	959	NA
1535	NA	1270	NA
1536	NA	1444	NA
1537	NA	1249	NA
1538	NA	1353	NA
1539	NA	1081	NA
1540	NA	1039	NA
1541	NA	1029	NA
1542	NA	910	NA
1543	NA	1044	NA
1544	NA	1032	NA
1545	NA	942	NA
1546	NA	1046	NA
1547	NA	1119	NA
1548	NA	1002	NA
1549	NA	966	NA
1550	1.029	916	113
1551	1.062	948	114
1552	1.263	1175	88
1553	0.963	912	51
1554	1.1950001	1126	69.0001
1555	1.044	930	114
1556	1.061	1012	49
1557	1.08	1065	15
1558	1.127	1081	46
1559	0.95899999	947	11.9999900000000
1560	1.364	1262	102
1561	0.94	960	-20
1562	0.85299999	851	1.99999000000003
1563	0.96100003	958	3.00003000000004
1564	0.98699999	998	-11.0000100000000
1565	1.211	1205	6
1566	1.102	1083	19
1567	1.17	1134	36
1568	0.917	935	-18
1569	0.84200001	1045	-202.99999
1570	0.741	925	-184
1571	0.76300001	991	-227.99999
1572	0.83200002	1053	-220.99998
1573	0.56999999	843	-273.00001
1574	0.88999999	1087	-197.00001
1575	0.80000001	1137	-336.99999
1576	0.89899999	1156	-257.00001
1577	0.66399997	952	-288.00003
1578	0.75	1157	-407
1579	0.50400001	877	-372.99999
1580	0.58499998	947	-362.00002
1581	0.48199999	823	-341.00001
1582	0.773	1019	-246
1583	0.71600002	992	-275.99998
1584	0.69800001	944	-245.99999
1585	0.833	1069	-236
1586	0.83700001	1061	-223.99999
1587	0.46900001	761	-291.99999
1588	0.45199999	751	-299.00001
1589	0.40099999	716	-315.00001
1590	0.56	764	-204
1591	0.65499997	831	-176.00003
1592	0.54299998	764	-221.00002
1593	0.699	1017	-318
1594	0.62900001	847	-217.99999
1595	0.59899998	788	-189.00002
1596	0.611	802	-191
1597	0.64700001	808	-160.99999
1598	0.405	607	-202
1599	0.53299999	726	-193.00001
1600	0.61199999	801	-189.00001
1601	0.38999999	545	-155.00001
1602	0.47999999	642	-162.00001
1603	0.189	348	-159
1604	0.29899999	470	-171.00001
1605	0.41999999	553	-133.00001
1606	0.54699999	788	-241.00001
1607	0.65600002	907	-250.99998
1608	0.54500002	776	-230.99998
1609	0.57700002	769	-191.99998
1610	0.67199999	869	-197.00001
1611	0.63	781	-151
1612	0.81199998	995	-183.00002
1613	0.96200001	1104	-141.99999
1614	0.93099999	1069	-138.00001
1615	1.086	1197	-111
1616	0.95099998	1030	-79.00002
1617	1.105	1166	-61
1618	0.91399997	959	-45.00003
1619	0.861	910	-49
1620	0.82800001	887	-58.99999
1621	0.83700001	929	-91.99999
1622	0.88099998	992	-111.00002
1623	0.73299998	845	-112.00002
1624	0.90499997	1022	-117.00003
1625	1.013	1124	-111.00
1626	0.76599997	869	-103.00003
1627	0.86699998	935	-68.00002
1628	1.017	1092	-75.0000000000001
1629	1.007	1112	-105.000000000000
1630	0.875	936	-61
1631	0.82300001	872	-48.99999
1632	1.011	1003	7.99999999999989
1633	0.84600002	912	-65.99998
1634	1.0319999	1054	-22.0001000000000
1635	1.043	1076	-33
1636	1.033	1068	-35
1637	1.018	1068	-50
1638	0.86900002	916	-46.9999800000001
1639	0.926	983	-57
1640	1.253	1264	-11
1641	0.87300003	875	-1.99996999999996
1642	0.89099997	934	-43.00003
1643	0.80199999	849	-47.00001
1644	0.977	1026	-49
1645	1.12	1119	1
1646	0.866	858	8
1647	1.043	951	92
1648	1.224	1054	170
1649	1.006	930	76
1650	0.95499998	905	49.9999799999999
1651	1.159	1159	0
1652	0.93000001	920	10.0000100000000
1653	1.056	1033	23
1654	1.038	976	62
1655	1.238	1218	20
1656	1.255	1211	44
1657	1.522	1350	172
1658	1.1849999	1124	60.9999
1659	1.018	978	40
1660	1.326	1300	26
1661	1.1440001	1158	-13.9999000000000
1662	1.033	1066	-33
1663	1.072	1077	-5
1664	1.099	1120	-21
1665	1.092	1117	-25
1666	1.05	1076	-26
1667	0.98900002	1012	-22.9999800000001
1668	0.85699999	854	2.99999000000003
1669	0.764	776	-12
1670	0.63599998	714	-78.00002
1671	0.778	881	-103
1672	0.93099999	1034	-103.00001
1673	0.78899997	870	-81.00003
1674	0.72299999	789	-66.00001
1675	0.59500003	693	-97.99997
1676	0.61500001	699	-83.9999899999999
1677	0.60799998	697	-89.00002
1678	0.51099998	598	-87.00002
1679	0.51599997	615	-99.00003
1680	0.537	647	-110
1681	0.537	664	-127
1682	0.48100001	601	-119.99999
1683	0.60500002	750	-144.99998
1684	0.61299998	746	-133.00002
1685	0.75099999	974	-223.00001
1686	0.87900001	1105	-225.99999
1687	0.796	996	-200
1688	0.70599997	901	-195.00003
1689	0.83499998	1064	-229.00002
1690	0.91500002	1112	-196.99998
1691	0.85100001	1039	-187.99999
1692	0.94199997	1142	-200.00003
1693	0.94999999	1091	-141.00001
1694	0.89999998	1011	-111.00002
1695	0.96200001	1074	-111.99999
1696	0.74299997	874	-131.00003
1697	0.90100002	1009	-107.99998
1698	0.76700002	933	-165.99998
1699	0.67000002	814	-143.99998
1700	0.792	936	-144
1701	0.69300002	842	-148.99998
1702	0.676	821	-145
1703	0.86000001	1041	-180.99999
1704	0.78100002	936	-154.99998
1705	0.63499999	782	-147.00001
1706	0.61500001	757	-141.99999
1707	0.88099998	1060	-179.00002
1708	0.671	798	-127
1709	0.713	856	-143
1710	0.59899998	722	-123.00002
1711	0.73400003	884	-149.99997
1712	0.65899998	760	-101.00002
1713	0.95499998	1105	-150.00002
1714	0.98900002	1110	-120.99998
1715	0.85100001	940	-88.99999
1716	0.85799998	967	-109.00002
1717	1.036	1142	-106
1718	1.006	1101	-95
1719	0.83200002	913	-80.99998
1720	1.011	1117	-106.000000000000
1721	0.73299998	798	-65.00002
1722	0.93800002	1046	-107.99998
1723	0.884	935	-51
1724	0.87300003	954	-80.99997
1725	0.92900002	1015	-85.99998
1726	1.033	1095	-62
1727	1.033	1097	-64
1728	1.008	1062	-54
1729	0.96200001	1028	-65.99999
1730	0.74900001	813	-63.9999899999999
1731	0.73000002	788	-57.99998
1732	0.91500002	1001	-85.99998
1733	0.74599999	822	-76.0000100000001
1734	1.154	1271	-117
1735	0.91100001	932	-20.9999900000000
1736	1.05	1080	-30
1737	0.75199997	800	-48.00003
1738	0.92299998	1002	-79.00002
1739	0.93400002	966	-31.9999799999999
1740	1.001	1046	-45.0000000000001
1741	0.87099999	887	-16.0000100000001
1742	0.97600001	1002	-25.9999900000000
1743	0.85600001	872	-15.9999899999999
1744	0.93699998	950	-13.0000200000001
1745	0.85399997	881	-27.0000299999999
1746	0.76899999	788	-19.0000100000001
1747	0.81900001	837	-17.9999900000000
1748	0.796	829	-33
1749	0.90799999	956	-48.00001
1750	0.80199999	818	-16.0000100000000
1751	1.0190001	1090	-70.9999
1752	1.117	1177	-60
1753	1.125	1184	-59
1754	0.935	987	-52
1755	1.154	1254	-100
1756	1.112	1176	-64
1757	1.1720001	1263	-90.9999
1758	1.0089999	1074	-65.0001
1759	1.224	1335	-111
1760	1.044	1044	0
1761	1.1799999	1231	-51.0001
1762	1.3380001	1363	-24.9999
1763	1.2539999	1270	-16.0001000000000
1764	1.107	1070	37
1765	1.344	1441	-97
1766	1.222	1309	-87
1767	1.341	1396	-55
1768	1.27	1289	-19
1769	1.278	1349	-71
1770	1.436	1540	-104
1771	1.268	1323	-55
1772	1.184	1255	-71
1773	1.372	1419	-47
1774	1.227	1209	18
1775	1.3329999	1371	-38.0001000000002
1776	1.0650001	1080	-14.9999000000000
1777	1.159	1225	-66
1778	1.1210001	1152	-30.9999
1779	1.234	1301	-67
1780	1.206	1231	-25
1781	1.49	1564	-74
1782	1.368	1442	-74
1783	1.124	1122	2
1784	1.382	1443	-61
1785	0.99800003	1004	-5.99996999999996
1786	1.132	1189	-57
1787	0.91100001	945	-33.99999
1788	0.70700002	720	-12.9999800000001
1789	0.84500003	893	-47.99997
1790	0.85600001	909	-52.9999899999999
1791	0.73299998	774	-41.0000200000000
1792	0.64899999	711	-62.00001
1793	0.616	664	-48
1794	0.67500001	731	-55.99999
1795	0.67000002	737	-66.99998
1796	0.52700001	591	-63.99999
1797	0.57999998	655	-75.00002
1798	0.778	884	-106
1799	0.78200001	858	-75.99999
1800	0.59299999	653	-60.00001
1801	0.79299998	876	-83.00002
1802	0.72600001	794	-67.99999
1803	0.634	710	-76
1804	0.79799998	874	-76.00002
1805	0.78200001	862	-79.99999
1806	0.75800002	841	-82.99998
1807	0.67500001	747	-71.99999
1808	0.99299997	1096	-103.00003
1809	0.954	1032	-78
1810	0.903	955	-52
1811	0.98799998	1017	-29.0000200000000
1812	0.90700001	936	-28.99999
1813	0.60299999	594	8.99999000000003
1814	0.74299997	771	-28.0000300000000
1815	0.792	823	-31
1816	0.71700001	737	-19.9999900000000
1817	0.68099999	714	-33.00001
1818	0.58099997	620	-39.0000299999999
1819	0.63300002	667	-33.9999800000001
1820	0.67900002	728	-48.9999799999999
1821	0.68099999	732	-51.00001
1822	0.69300002	727	-33.9999799999999
1823	0.93300003	1001	-67.9999700000001
1824	0.78299999	822	-39.00001
1825	0.72399998	770	-46.0000200000001
1826	0.745	775	-30
1827	0.78100002	826	-44.9999799999999
1828	0.93400002	984	-49.9999799999999
1829	0.954	988	-34
1830	0.92500001	963	-37.99999
1831	0.95700002	977	-19.9999800000001
1832	0.917	940	-23
1833	0.76200002	763	-0.99998000000005
1834	0.736	754	-18
1835	0.69400001	720	-25.9999900000000
1836	0.58600003	603	-16.9999700000000
1837	0.59100002	631	-39.9999800000001
1838	0.47499999	502	-27.0000100000000
1839	0.514	562	-48
1840	0.46799999	508	-40.00001
1841	0.59299999	665	-72.00001
1842	0.41600001	458	-41.99999
1843	0.47499999	545	-70.00001
1844	0.56	638	-78
1845	0.52499998	601	-76.00002
1846	0.64600003	743	-96.99997
1847	0.66900003	751	-81.99997
1848	0.80800003	907	-98.99997
1849	0.78600001	872	-85.99999
1850	0.63800001	694	-55.99999
1851	0.60900003	667	-57.99997
1852	0.55599999	559	-3.00000999999997
1853	0.53299999	571	-38.00001
1854	0.31999999	335	-15.0000100000000
1855	0.42500001	493	-67.99999
1856	0.52100003	608	-86.99997
1857	0.54100001	632	-90.99999
1858	0.56800002	656	-87.99998
1859	0.51700002	615	-97.99998
1860	0.70300001	811	-107.99999
1861	0.62300003	714	-90.99997
1862	0.63	727	-97
1863	0.60000002	689	-88.99998
1864	0.73100001	831	-99.9999899999999
1865	0.64999998	727	-77.00002
1866	0.50300002	581	-77.99998
1867	0.36700001	431	-63.99999
1868	0.46900001	548	-78.99999
1869	0.477	547	-70
1870	0.41299999	496	-83.00001
1871	0.52399999	606	-82.00001
1872	0.249	311	-62
1873	0.324	371	-47
1874	0.405	495	-90
1875	0.45300001	554	-100.99999
1876	0.45199999	561	-109.00001
1877	0.52499998	635	-110.00002
1878	0.61500001	719	-103.999990000000
1879	0.66299999	770	-107.00001
1880	0.68199998	801	-119.00002
1881	0.69400001	813	-118.99999
1882	0.73900002	849	-109.99998
1883	0.74599999	874	-128.00001
1884	0.54699999	648	-101.00001
1885	0.68099999	788	-107.00001
1886	0.64899999	743	-94.00001
1887	0.699	804	-105
1888	0.69400001	797	-102.99999
1889	0.69300002	787	-93.99998
1890	0.71200001	816	-103.99999
1891	0.91399997	1035	-121.00003
1892	0.84399998	933	-89.00002
1893	0.722	792	-70
1894	0.71799999	789	-71.00001
1895	0.74199998	812	-70.00002
1896	0.93300003	1032	-98.99997
1897	0.94300002	1014	-70.99998
1898	0.91000003	968	-57.9999700000001
1899	0.94599998	981	-35.0000200000001
1900	0.99699998	1005	-8.00001999999995
1901	0.95999998	985	-25.0000200000001
1902	1.045	1111	-66
1903	0.92299998	927	-4.00001999999995
1904	0.79400003	790	4.00002999999992
1905	0.935	924	11
1906	1.018	1030	-12
1907	1.038	1069	-31
1908	1.086	1132	-46
1909	1.257	1323	-66
1910	1.005	1032	-27.0000000000001
1911	1.045	1069	-24
1912	1.224	1270	-46
1913	0.99900001	950	49.0000100000001
1914	0.89999998	908	-8.00001999999995
1915	0.96399999	949	14.9999900000000
1916	0.98799998	966	21.9999800000001
1917	0.94700003	954	-6.99996999999996
1918	0.977	980	-3
1919	1.119	1105	14
1920	1.174	1172	2
1921	1.186	1148	38
1922	1.3099999	1289	20.9999000000000
1923	1.149	1111	38
1924	1.395	1350	45
1925	1.284	1219	65
1926	1.2539999	1229	24.9999
1927	1.421	1408	13
1928	1.4069999	1333	73.9999
1929	1.525	1463	62
1930	1.595	1506	89
1931	1.475	1364	111
1932	1.602	1517	85
1933	1.326	1238	88
1934	1.286	1203	83
1935	1.3559999	1251	104.9999
1936	1.214	1093	121
1937	0.884	782	102
1938	1.243	1132	111
1939	1.238	1131	107
1940	1.238	1165	73
1941	1.2359999	1199	36.9999
1942	1.205	1157	48
1943	1.244	1166	78
1944	1.399	1370	29
1945	1.2690001	1215	54.0001
1946	1.485	1444	41
1947	1.312	1192	120
1948	1.3660001	1333	33.0001
1949	1.365	1320	45
1950	1.609	1555	54
1951	1.586	1493	93
1952	1.478	1351	127
1953	1.388	1274	114
1954	1.446	1373	73
1955	1.4859999	1387	98.9999
1956	1.658	1554	104
1957	1.614	1480	134
1958	1.568	1409	159
1959	1.794	1642	152
1960	1.749	1561	188
1961	1.288	1089	199
1962	1.262	1115	147
1963	1.2539999	1119	134.9999
1964	1.332	1214	118
1965	1.409	1259	150
1966	1.363	1193	170
1967	1.482	1279	203
1968	1.562	1368	194
1969	1.434	1233	201
1970	1.313	1102	211
1971	1.2410001	1058	183.0001
1972	1.3	1122	178
1973	1.2819999	1087	194.9999
1974	1.508	1314	194
1975	1.5700001	1397	173.0001
1976	1.666	1471	195
1977	1.723	1506	217
1978	1.237	1027	210
1979	1.307	1089	218
1980	1.341	1120	221
1981	1.176	948	228
1982	1.317	1101	216
1983	1.436	1210	226
1984	1.521	1263	258
1985	1.469	1194	275
1986	1.613	1354	259
1987	1.515	1259	256
1988	1.48	1191	289
1989	1.647	1353	294
1990	1.758	1472	286
1991	1.726	1414	312
1992	1.653	1374	279
1993	1.346	1084	262
1994	1.5470001	1312	235.0001