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	NA	NA
1476	NA	NA	NA
1477	NA	NA	NA
1478	NA	NA	NA
1479	NA	NA	NA
1480	NA	NA	NA
1481	NA	NA	NA
1482	NA	NA	NA
1483	NA	NA	NA
1484	NA	NA	NA
1485	NA	NA	NA
1486	NA	NA	NA
1487	NA	NA	NA
1488	NA	NA	NA
1489	NA	NA	NA
1490	NA	NA	NA
1491	NA	NA	NA
1492	NA	NA	NA
1493	NA	NA	NA
1494	NA	NA	NA
1495	NA	NA	NA
1496	NA	NA	NA
1497	NA	NA	NA
1498	NA	NA	NA
1499	NA	NA	NA
1500	NA	NA	NA
1501	NA	NA	NA
1502	NA	NA	NA
1503	NA	NA	NA
1504	NA	NA	NA
1505	NA	NA	NA
1506	NA	NA	NA
1507	NA	NA	NA
1508	NA	NA	NA
1509	NA	NA	NA
1510	NA	NA	NA
1511	NA	NA	NA
1512	NA	NA	NA
1513	NA	NA	NA
1514	NA	NA	NA
1515	0.838	NA	NA
1516	0.87300003	NA	NA
1517	0.685	NA	NA
1518	0.926	NA	NA
1519	1.284	NA	NA
1520	0.81300002	NA	NA
1521	0.87900001	NA	NA
1522	0.67699999	NA	NA
1523	0.86500001	NA	NA
1524	0.60500002	693	-87.99998
1525	0.64700001	693	-45.99999
1526	0.59200001	623	-30.99999
1527	0.51499999	473	41.9999899999999
1528	0.41	333	77
1529	0.414	473	-59
1530	0.81999999	763	56.99999
1531	0.588	553	35
1532	0.69700003	623	74.00003
1533	0.68900001	733	-43.99999
1534	0.66600001	663	3.00000999999997
1535	0.91299999	983	-70.00001
1536	0.84399998	763	80.99998
1537	0.65600002	623	33.0000200000001
1538	0.838	913	-75
1539	0.815	983	-168
1540	0.79699999	913	-116.00001
1541	0.63700002	913	-275.99998
1542	0.57800001	763	-184.99999
1543	0.39199999	403	-11.0000100000000
1544	0.82499999	943	-118.00001
1545	1.003	983	19.9999999999999
1546	0.70999998	873	-163.00002
1547	0.884	913	-29
1548	0.778	763	15
1549	0.884	763	121
1550	0.73299998	553	179.99998
1551	1.169	1053	116
1552	0.79900002	843	-43.9999799999999
1553	0.95099998	843	107.99998
1554	1.012	843	169
1555	0.70999998	693	16.9999799999999
1556	0.76899999	693	75.9999899999999
1557	0.94300002	913	30.0000200000001
1558	0.86900002	873	-3.99998000000005
1559	0.81	843	-33
1560	0.65499997	658	-3.00003000000004
1561	0.76899999	863	-94.0000100000001
1562	0.77899998	993	-214.00002
1563	0.727	958	-231
1564	0.92900002	1033	-103.99998
1565	1.058	1163	-105
1566	1.057	1173	-116
1567	1.028	1273	-245
1568	0.99199998	1258	-266.00002
1569	0.73799998	913	-175.00002
1570	0.77600002	983	-206.99998
1571	0.49200001	563	-70.99999
1572	0.64300001	653	-9.99999000000003
1573	0.68000001	843	-162.99999
1574	0.65499997	623	31.9999700000000
1575	0.53399998	623	-89.00002
1576	0.56300002	693	-129.99998
1577	0.72299999	733	-10.0000100000000
1578	0.80699998	783	23.9999799999999
1579	0.73299998	698	34.9999800000001
1580	0.66399997	698	-34.00003
1581	0.90799999	1003	-95.00001
1582	1.017	1058	-41.0000000000001
1583	1.158	1078	80
1584	1.232	1194	38
1585	0.87400001	738	136.00001
1586	0.96600002	923	43.0000200000000
1587	0.86199999	743	118.99999
1588	0.95499998	823	131.99998
1589	1.015	833	182
1590	1.262	1043	219
1591	1.465	1543	-78
1592	1.466	1489	-23
1593	0.99599999	953	42.9999899999999
1594	1.138	1158	-20
1595	1.293	1302	-9
1596	1.535	1592	-57
1597	1.594	1645	-51
1598	1.387	1493	-106
1599	1.663	2063	-400
1600	1.403	1187	216
1601	1.592	1456	136
1602	1.263	1193	70
1603	0.977	889	88
1604	1.4910001	1448	43.0001
1605	1.543	1472	71
1606	1.4	1454	-54
1607	1.423	1529	-106
1608	1.28	1209	71
1609	1.6950001	1554	141.0001
1610	1.487	1456	31
1611	1.693	1550	143
1612	1.825	1592	233
1613	1.76	1588	172
1614	1.648	1539	109
1615	1.939	1831	108
1616	1.87	1769	101
1617	1.814	1675	139
1618	1.989	1758	231
1619	1.577	1475	102
1620	1.49	1332	158
1621	1.568	1629	-61
1622	1.272	1303	-31
1623	1.261	1264	-3
1624	1.147	1140	7
1625	0.89399999	926	-32.0000100000001
1626	1.079	1192	-113
1627	0.90700001	808	99.00001
1628	1.016	980	36
1629	1.064	1046	18
1630	0.93900001	821	118.00001
1631	0.625	610	15
1632	1.277	1375	-98
1633	1.2359999	1294	-58.0001
1634	1.2589999	1267	-8.00009999999997
1635	0.708	828	-120
1636	1.127	1266	-139
1637	0.995	1109	-114
1638	1.2079999	1360	-152.000100000000
1639	0.84399998	1021	-177.00002
1640	0.546	561	-15
1641	0.75300002	825	-71.99998
1642	0.58200002	622	-39.9999800000001
1643	0.82099998	897	-76.00002
1644	0.89300001	951	-57.99999
1645	0.58200002	560	22.0000200000000
1646	0.74900001	829	-79.9999899999999
1647	0.847	888	-41
1648	0.93800002	1070	-131.99998
1649	0.926	1094	-168
1650	1.209	1435	-226
1651	0.78100002	1062	-280.99998
1652	0.55000001	719	-168.99999
1653	0.78799999	961	-173.00001
1654	0.88200003	1181	-298.99997
1655	0.95999998	1276	-316.00002
1656	0.954	1239	-285
1657	0.53200001	615	-82.99999
1658	0.84200001	1047	-204.99999
1659	0.65499997	792	-137.00003
1660	0.81	996	-186
1661	0.61000001	753	-142.99999
1662	0.616	747	-131
1663	0.54900002	631	-81.99998
1664	0.495	567	-72
1665	0.54699999	668	-121.00001
1666	0.78899997	917	-128.00003
1667	0.65200001	801	-148.99999
1668	0.63	740	-110
1669	0.74800003	852	-103.99997
1670	0.58999997	714	-124.00003
1671	0.54699999	681	-134.00001
1672	0.53600001	657	-120.99999
1673	0.55400002	636	-81.99998
1674	0.463	509	-46
1675	0.565	625	-60
1676	0.565	716	-151
1677	0.47799999	591	-113.00001
1678	0.59600002	739	-142.99998
1679	0.62199998	742	-120.00002
1680	0.52600002	599	-72.99998
1681	0.648	865	-217
1682	0.74599999	935	-189.00001
1683	0.69300002	900	-206.99998
1684	0.64099997	823	-182.00003
1685	0.565	691	-126
1686	0.509	695	-186
1687	0.61199999	731	-119.00001
1688	0.69300002	829	-135.99998
1689	0.79000002	1072	-281.99998
1690	0.68900001	803	-113.99999
1691	0.62	789	-169
1692	0.66900003	871	-201.99997
1693	0.61500001	793	-177.99999
1694	0.79100001	997	-205.99999
1695	0.66100001	794	-132.99999
1696	0.69800001	871	-172.99999
1697	0.50400001	606	-101.99999
1698	0.59399998	817	-223.00002
1699	0.64200002	835	-192.99998
1700	0.884	1088	-204
1701	0.94499999	1153	-208.00001
1702	0.912	1132	-220
1703	0.79900002	874	-74.99998
1704	0.81699997	970	-153.00003
1705	0.792	944	-152
1706	0.85100001	972	-120.99999
1707	0.87	1020	-150
1708	1.175	1311	-136
1709	0.82999998	884	-54.0000200000001
1710	0.87599999	1023	-147.00001
1711	0.57800001	541	37.00001
1712	0.79799998	971	-173.00002
1713	0.92199999	1192	-270.00001
1714	1.056	1269	-213
1715	1.199	1359	-160
1716	0.954	1025	-71
1717	0.926	992	-66
1718	0.98000002	1123	-142.99998
1719	1.03	1081	-51
1720	1.2640001	1341	-76.9999
1721	1.131	1205	-74
1722	1.2920001	1386	-93.9998999999998
1723	1.317	1453	-136
1724	1.424	1672	-248
1725	0.97799999	1115	-137.00001
1726	1.256	1476	-220
1727	1.301	1480	-179
1728	0.833	941	-108
1729	1.043	1142	-99
1730	1.072	1276	-204
1731	1.096	1243	-147
1732	1.0470001	1117	-69.9999
1733	1.028	1147	-119
1734	0.852	906	-54
1735	0.82499999	912	-87.00001
1736	0.912	779	133
1737	0.85399997	852	1.99997000000008
1738	0.88300002	922	-38.9999800000001
1739	0.792	886	-94
1740	0.80500001	893	-87.99999
1741	0.61699998	643	-26.0000200000000
1742	0.44999999	514	-64.00001
1743	0.653	669	-16
1744	0.55599999	551	4.99999000000003
1745	0.72899997	874	-145.00003
1746	0.69800001	673	25.0000100000000
1747	0.76599997	717	48.99997
1748	0.97299999	955	17.9999900000000
1749	1.243	1234	9
1750	1.309	1201	108
1751	0.79000002	771	19.0000200000001
1752	0.87800002	914	-35.9999800000001
1753	0.83999997	845	-5.00002999999992
1754	0.66399997	590	73.99997
1755	0.81999999	781	38.99999
1756	0.99199998	909	82.99998
1757	0.94499999	869	75.99999
1758	1.1569999	1081	75.9999
1759	1.155	1038	117
1760	1.039	967	72
1761	1.321	1303	18
1762	0.73000002	736	-5.99998000000005
1763	0.852	852	0
1764	0.80800003	864	-55.9999700000001
1765	0.713	746	-33
1766	0.852	847	5
1767	0.90200001	901	1.00000999999997
1768	1.016	958	58
1769	0.917	791	126
1770	1.073	979	94
1771	0.95599997	931	24.9999700000001
1772	1.3380001	1321	17.0001000000000
1773	1.138	1147	-9
1774	1.123	1221	-98
1775	0.83899999	955	-116.00001
1776	0.87300003	980	-106.99997
1777	0.90399998	901	2.99998000000005
1778	0.95599997	907	48.9999700000001
1779	0.94599998	924	21.9999799999999
1780	0.61299998	528	84.99998
1781	0.977	977	0
1782	0.75599998	778	-22.0000200000000
1783	0.86299998	895	-32.0000200000000
1784	0.90499997	850	54.99997
1785	1.057	1024	33
1786	0.89600003	989	-92.99997
1787	0.73500001	843	-107.999990000000
1788	0.815	895	-80
1789	0.77899998	919	-140.00002
1790	0.926	1009	-83
1791	1.0089999	1040	-31.0001
1792	0.97100002	1037	-65.99998
1793	0.86400002	997	-132.99998
1794	1.076	1192	-116
1795	1.082	1218	-136
1796	1.002	1127	-125
1797	0.815	945	-130
1798	0.87599999	958	-82.0000100000001
1799	0.79000002	893	-102.99998
1800	0.89099997	960	-69.00003
1801	0.949	952	-3
1802	1.039	983	56
1803	1.001	1047	-46.0000000000001
1804	0.963	831	132
1805	1.03	983	47
1806	1.0369999	972	64.9999
1807	1.005	900	105.000000000000
1808	1.214	1147	67
1809	0.97899997	913	65.9999700000001
1810	1.1289999	1139	-10.0001000000000
1811	1.028	989	39
1812	1.018	1062	-44
1813	0.83899999	864	-25.0000100000000
1814	0.74299997	752	-9.00003000000004
1815	0.70099998	790	-89.00002
1816	0.62	659	-39
1817	0.884	932	-48
1818	0.88599998	918	-32.0000200000000
1819	0.95999998	972	-12.0000200000001
1820	1.2	1203	-3
1821	0.87800002	902	-23.9999800000001
1822	0.66799998	676	-8.00001999999995
1823	0.89200002	933	-40.9999800000001
1824	0.75599998	778	-22.0000200000000
1825	0.82800001	976	-147.99999
1826	0.62599999	661	-35.0000100000001
1827	0.58600003	769	-182.99997
1828	0.71899998	805	-86.00002
1829	0.76300001	872	-108.99999
1830	0.759	776	-17
1831	0.72399998	891	-167.00002
1832	0.64999998	791	-141.00002
1833	0.59799999	699	-101.00001
1834	0.65899998	765	-106.00002
1835	0.62300003	726	-102.99997
1836	0.64200002	731	-88.99998
1837	0.72899997	826	-97.00003
1838	0.63499999	772	-137.00001
1839	0.64999998	774	-124.00002
1840	0.64899999	807	-158.00001
1841	0.63099998	791	-160.00002
1842	0.57599998	712	-136.00002
1843	0.64999998	687	-37.0000200000000
1844	0.70599997	738	-32.0000299999999
1845	0.653	754	-101
1846	0.61199999	725	-113.00001
1847	0.81599998	851	-35.0000200000001
1848	0.824	877	-53
1849	0.79699999	850	-53.00001
1850	0.66100001	690	-28.99999
1851	0.685	702	-17
1852	0.88700002	902	-14.9999800000001
1853	1.044	1081	-37
1854	0.90799999	1048	-140.00001
1855	1.2130001	1321	-107.9999
1856	0.81599998	1129	-313.00002
1857	1.006	1172	-166
1858	0.84100002	1096	-254.99998
1859	0.71700001	956	-238.99999
1860	0.597	893	-296
1861	0.69700003	895	-197.99997
1862	0.69199997	873	-181.00003
1863	0.98400003	1100	-115.99997
1864	0.71600002	861	-144.99998
1865	0.84399998	1031	-187.00002
1866	0.78799999	878	-90.00001
1867	0.88499999	1007	-122.00001
1868	0.76099998	783	-22.0000200000000
1869	0.82300001	817	6.00000999999997
1870	0.81999999	791	28.99999
1871	0.60000002	567	33.0000200000000
1872	0.72899997	723	5.99997000000008
1873	0.722	771	-49
1874	0.68099999	632	48.99999
1875	0.57800001	599	-20.9999900000000
1876	0.84799999	767	80.99999
1877	0.92699999	952	-25.0000100000000
1878	0.79000002	734	56.0000200000001
1879	0.708	709	-1
1880	0.88800001	801	87.00001
1881	0.91600001	846	70.00001
1882	0.83099997	797	33.9999700000001
1883	0.76300001	654	109.00001
1884	0.85900003	721	138.00003
1885	1.433	1200	233
1886	1.028	977	51
1887	1.1619999	1061	100.9999
1888	1.062	884	178
1889	0.99299997	904	88.99997
1890	0.95899999	905	53.99999
1891	0.949	784	165
1892	0.99900001	963	36.0000100000001
1893	0.89899999	967	-68.00001
1894	1.1059999	1066	39.9999
1895	1.0880001	1066	22.0001000000000
1896	0.88599998	1012	-126.00002
1897	1.2029999	1210	-7.00009999999997
1898	0.93199998	1013	-81.00002
1899	0.77700001	856	-78.99999
1900	1.217	1277	-60
1901	0.90600002	914	-7.99997999999994
1902	1.411	1000	411
1903	1.248	1061	187
1904	1.125	1369	-244
1905	1.186	1458	-272
1906	1.5089999	1517	-8.00009999999997
1907	1.523	1778	-255
1908	1.406	1504	-98
1909	1.1720001	1223	-50.9999
1910	1.141	1098	43
1911	1.2640001	1305	-40.9999
1912	1.061	1121	-60
1913	1.245	1376	-131
1914	1.086	1042	44
1915	1.097	1074	23
1916	1.446	1459	-13
1917	1.645	1793	-148
1918	1.921	1942	-21
1919	1.4960001	1405	91.0001
1920	1.696	1788	-92
1921	1.9299999	1972	-42.0001
1922	1.087	985	102
1923	2.154	1979	175
1924	1.909	1626	283
1925	1.9349999	1932	2.99990000000003
1926	1.79	1634	156
1927	1.8099999	1570	239.9999
1928	1.955	1634	321
1929	2.0150001	1689	326.0001
1930	1.664	1292	372
1931	1.404	1134	270
1932	1.4630001	1319	144.0001
1933	1.274	1058	216
1934	1.37	1126	244
1935	1.696	1378	318
1936	1.502	1355	147
1937	1.557	1400	157
1938	1.431	1198	233
1939	1.656	1418	238
1940	1.666	1294	372
1941	1.7309999	1365	365.9999
1942	1.676	1343	333
1943	1.936	1638	298
1944	1.9119999	1468	443.9999
1945	1.8329999	1353	479.9999
1946	1.79	1392	398
1947	1.66	1226	434
1948	1.6109999	1262	348.9999
1949	1.3940001	1122	272.0001
1950	1.528	1145	383
1951	1.443	1044	399
1952	1.744	1263	481
1953	1.743	1307	436
1954	1.956	1379	577
1955	1.869	1346	523
1956	1.58	1140	440
1957	1.789	1249	540
1958	1.786	1416	370
1959	1.751	1282	469
1960	1.7539999	1278	475.9999
1961	1.6	1172	428
1962	1.494	1124	370
1963	1.2130001	909	304.0001
1964	1.377	966	411
1965	1.4170001	1034	383.0001
1966	1.28	836	444
1967	1.209	797	412
1968	1.108	711	397
1969	1.175	744	431
1970	1.27	780	490
1971	1.409	889	520
1972	1.257	779	478
1973	1.107	717	390
1974	1.133	757	376
1975	0.93199998	601	330.99998
1976	1.161	760	401
1977	1.585	853	732
1978	1.585	579	1006
1979	1.585	744	841
1980	1.585	925	660
1981	NA	916	NA
1982	NA	1319	NA
1983	NA	814	NA
1984	NA	1048	NA
1985	NA	1038	NA
1986	NA	1003	NA
1987	NA	898	NA
1988	NA	848	NA
1989	NA	1061	NA
1990	NA	1038	NA
1991	NA	NA	NA
1992	NA	NA	NA
1993	NA	NA	NA
1994	NA	NA	NA