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	0.39700001	NA	NA
1460	0.57499999	NA	NA
1461	0.39700001	NA	NA
1462	0.285	NA	NA
1463	0.419	NA	NA
1464	0.308	NA	NA
1465	0.419	NA	NA
1466	0.419	NA	NA
1467	0.486	NA	NA
1468	0.75300002	NA	NA
1469	0.73000002	NA	NA
1470	0.55199999	NA	NA
1471	0.52999997	NA	NA
1472	0.66399997	NA	NA
1473	0.308	NA	NA
1474	0.52999997	NA	NA
1475	0.52999997	NA	NA
1476	0.52999997	NA	NA
1477	0.308	NA	NA
1478	0.26300001	NA	NA
1479	0.241	NA	NA
1480	0.308	NA	NA
1481	0.308	NA	NA
1482	0.463	NA	NA
1483	0.463	NA	NA
1484	0.463	NA	NA
1485	0.52999997	NA	NA
1486	0.44100001	NA	NA
1487	0.597	NA	NA
1488	0.75300002	NA	NA
1489	0.66399997	NA	NA
1490	0.88599998	NA	NA
1491	0.93099999	NA	NA
1492	0.99699998	NA	NA
1493	1.2869999	NA	NA
1494	1.109	NA	NA
1495	1.22	NA	NA
1496	1.598	NA	NA
1497	1.398	NA	NA
1498	1.5089999	NA	NA
1499	1.709	NA	NA
1500	1.487	NA	NA
1501	1.198	NA	NA
1502	1.22	NA	NA
1503	1.2640001	NA	NA
1504	0.84200001	NA	NA
1505	0.90799999	NA	NA
1506	1.5089999	NA	NA
1507	2.0209999	NA	NA
1508	2.421	NA	NA
1509	2.6659999	NA	NA
1510	2.4660001	NA	NA
1511	2.1760001	NA	NA
1512	1.909	NA	NA
1513	1.054	NA	NA
1514	1.466	NA	NA
1515	1.987	NA	NA
1516	1.774	NA	NA
1517	1.498	NA	NA
1518	1.762	NA	NA
1519	1.497	NA	NA
1520	0.96100003	NA	NA
1521	1.487	NA	NA
1522	1.3049999	NA	NA
1523	1.835	NA	NA
1524	1.6289999	NA	NA
1525	1.9579999	NA	NA
1526	1.854	NA	NA
1527	1.92	NA	NA
1528	1.443	NA	NA
1529	1.798	NA	NA
1530	1.984	1500	484
1531	1.962	1218	744
1532	1.612	1419	193
1533	1.461	1137	324
1534	1.26	1117	143
1535	1.521	1460	61
1536	1.2589999	1037	221.9999
1537	1.22	1379	-159
1538	1.115	1137	-22
1539	1.04	1238	-198
1540	1.041	1017	24
1541	1.517	1218	299
1542	1.908	1137	771
1543	1.314	976	338
1544	1.7029999	1017	685.9999
1545	1.337	1299	38
1546	1.3940001	1319	75.0001
1547	1.123	976	147
1548	1.029	1379	-350
1549	1.017	1258	-241
1550	0.84100002	1178	-336.99998
1551	1.007	1500	-493
1552	1.063	1419	-356
1553	0.97100002	934	37.0000200000000
1554	1.018	1151	-133
1555	0.93400002	1084	-149.99998
1556	0.926	1033	-107
1557	0.94199997	1089	-147.00003
1558	1.089	1259	-170
1559	1.207	1328	-121
1560	1.126	1057	69
1561	0.83999997	836	3.99997000000008
1562	1.089	1317	-228
1563	0.995	1419	-424
1564	1.265	1218	47
1565	1.054	1057	-3
1566	1.008	1137	-129
1567	0.76200002	1042	-279.99998
1568	0.91600001	1220	-303.99999
1569	0.98199999	1135	-153.00001
1570	0.87099999	874	-3.00001000000009
1571	0.93400002	764	170.00002
1572	1.073	865	208
1573	0.95099998	1016	-65.0000200000001
1574	0.98199999	919	62.99999
1575	1.263	1150	113
1576	1.169	896	273
1577	0.76200002	896	-133.99998
1578	1.062	987	75
1579	0.99400002	1017	-22.9999800000001
1580	1.027	947	80
1581	0.86400002	896	-31.9999800000001
1582	1.127	976	151
1583	0.87199998	775	96.99998
1584	0.91299999	978	-65.00001
1585	0.79400003	856	-61.9999700000001
1586	0.77600002	755	21.0000200000001
1587	0.76999998	775	-5.00001999999995
1588	0.81999999	896	-76.00001
1589	0.73000002	1025	-294.99998
1590	0.84299999	1118	-275.00001
1591	0.66299999	855	-192.00001
1592	0.74599999	902	-156.00001
1593	0.70700002	755	-47.9999800000001
1594	0.76899999	976	-207.00001
1595	0.99699998	1133	-136.00002
1596	0.93400002	923	11.0000200000001
1597	1.216	1460	-244
1598	0.88300002	1037	-153.99998
1599	1.15	1419	-269
1600	1.02	975	45
1601	1.229	1072	157
1602	0.99299997	976	16.9999700000000
1603	0.778	1130	-352
1604	0.72899997	1089	-360.00003
1605	0.72600001	884	-157.99999
1606	0.89099997	1032	-141.00003
1607	0.78600001	743	43.00001
1608	0.77399999	769	4.99999000000003
1609	0.986	801	185
1610	0.82800001	629	199.00001
1611	0.73000002	590	140.00002
1612	0.852	578	274
1613	0.94599998	745	200.99998
1614	0.90799999	832	75.99999
1615	0.97000003	822	148.00003
1616	0.88300002	854	29.0000200000000
1617	1.036	912	124
1618	0.95899999	757	201.99999
1619	0.74000001	711	29.0000100000001
1620	0.78899997	912	-123.00003
1621	0.64499998	890	-245.00002
1622	0.60399997	775	-171.00003
1623	0.57200003	826	-253.99997
1624	0.54100001	880	-338.99999
1625	0.55699998	889	-332.00002
1626	0.56099999	948	-387.00001
1627	0.73699999	819	-82.00001
1628	0.63999999	788	-148.00001
1629	0.69800001	968	-269.99999
1630	0.79400003	952	-157.99997
1631	0.58700001	645	-57.99999
1632	0.67500001	892	-216.99999
1633	0.69700003	910	-212.99997
1634	0.82300001	1092	-268.99999
1635	0.63499999	819	-184.00001
1636	0.866	1112	-246
1637	0.89499998	1108	-213.00002
1638	0.79500002	1045	-249.99998
1639	0.93300003	1200	-266.99997
1640	1.0650001	1394	-328.9999
1641	1.058	1159	-101
1642	0.98000002	1086	-105.99998
1643	0.87099999	1079	-208.00001
1644	0.97000003	1123	-152.99997
1645	0.81900001	1011	-191.99999
1646	0.87400001	838	36.0000100000001
1647	0.82999998	1021	-191.00002
1648	0.829	918	-89
1649	0.93900001	1095	-155.99999
1650	0.97600001	1137	-160.99999
1651	0.917	976	-59
1652	0.889	1117	-228
1653	0.80800003	997	-188.99997
1654	0.96899998	1258	-289.00002
1655	0.97100002	973	-1.99998000000005
1656	0.91799998	1048	-130.00002
1657	0.92500001	1036	-110.99999
1658	1.105	1015	90
1659	1.132	872	260
1660	1.15	1192	-42
1661	1.188	1234	-46
1662	1.347	1022	325
1663	1.183	1012	171
1664	1.082	1078	4
1665	1.056	908	148
1666	1.147	963	184
1667	0.949	876	73
1668	0.977	1131	-154
1669	1.0140001	1163	-148.9999
1670	0.81599998	829	-13.0000200000001
1671	0.94	762	178
1672	0.89700001	1009	-111.99999
1673	0.85600001	1089	-232.99999
1674	0.59899998	662	-63.0000200000001
1675	0.792	905	-113
1676	0.89099997	1017	-126.00003
1677	0.84799999	1080	-232.00001
1678	0.935	1290	-355
1679	0.86799997	1198	-330.00003
1680	0.85000002	1080	-229.99998
1681	1.02	1124	-104
1682	1.08	1105	-25
1683	0.98400003	1132	-147.99997
1684	0.94099998	1054	-113.00002
1685	0.81800002	868	-49.9999799999999
1686	0.84799999	969	-121.00001
1687	0.63499999	721	-86.0000100000001
1688	0.80900002	889	-79.99998
1689	0.755	824	-69
1690	0.90600002	963	-56.9999799999999
1691	0.88	1006	-126
1692	0.875	1140	-265
1693	0.84200001	974	-131.99999
1694	0.90700001	1240	-332.99999
1695	0.70499998	963	-258.00002
1696	0.85799998	1122	-264.00002
1697	0.77499998	1208	-433.00002
1698	0.72600001	931	-204.99999
1699	0.54799998	828	-280.00002
1700	0.43700001	585	-147.99999
1701	0.40599999	748	-342.00001
1702	0.59399998	812	-218.00002
1703	0.57099998	811	-240.00002
1704	0.47099999	792	-321.00001
1705	0.39500001	729	-333.99999
1706	0.43799999	814	-376.00001
1707	0.63300002	969	-335.99998
1708	0.57200003	941	-368.99997
1709	0.551	856	-305
1710	0.56900001	812	-242.99999
1711	0.50099999	585	-84.00001
1712	0.47099999	578	-107.00001
1713	0.62900001	877	-247.99999
1714	0.62099999	670	-49.0000100000001
1715	0.74199998	777	-35.0000200000000
1716	0.68599999	760	-74.00001
1717	0.57300001	659	-85.99999
1718	0.62800002	728	-99.99998
1719	0.653	804	-151
1720	0.86699998	991	-124.00002
1721	0.648	687	-39
1722	0.81900001	975	-155.99999
1723	0.87900001	946	-66.9999899999999
1724	0.92500001	964	-38.99999
1725	1.006	1028	-22
1726	1.074	1123	-49
1727	1.284	1346	-62
1728	0.84399998	914	-70.00002
1729	1.189	1196	-7
1730	0.97100002	1189	-217.99998
1731	0.90399998	1029	-125.00002
1732	0.78899997	942	-153.00003
1733	1.029	1142	-113
1734	1.212	1054	158
1735	1.187	1014	173
1736	1.016	999	17
1737	1.159	1160	-1
1738	0.935	942	-7
1739	1.073	1233	-160
1740	0.98699999	1083	-96.00001
1741	0.838	950	-112
1742	0.80599999	912	-106.00001
1743	0.84299999	1043	-200.00001
1744	0.727	864	-137
1745	0.87300003	1085	-211.99997
1746	1.012	1115	-103
1747	0.898	1041	-143
1748	1.058	1122	-64
1749	1.189	1217	-28
1750	1.175	1159	16
1751	0.94599998	957	-11.0000200000001
1752	0.972	1084	-112
1753	1.163	1126	37
1754	1.101	957	144
1755	0.87900001	774	105.000010000000
1756	1.277	1177	100
1757	0.77999997	753	26.9999700000000
1758	0.90100002	929	-27.9999799999999
1759	0.903	903	0
1760	1.138	1076	62
1761	1.238	1340	-102
1762	1.007	934	72.9999999999999
1763	1.164	1003	161
1764	0.96499997	877	87.99997
1765	0.85500002	709	146.00002
1766	0.94999999	939	10.9999900000000
1767	0.89399999	960	-66.0000100000001
1768	1.103	1041	62
1769	1.033	933	100
1770	1.152	1163	-11
1771	1.253	1106	147
1772	1.411	1307	104
1773	1.176	959	217
1774	1.219	1022	197
1775	1.248	1055	193
1776	1.331	979	352
1777	1.266	1007	259
1778	1.221	1035	186
1779	1.081	891	190
1780	1.061	853	208
1781	1.327	1073	254
1782	1.029	782	247
1783	1.164	870	294
1784	0.98199999	793	188.99999
1785	1.0369999	911	125.9999
1786	1.23	1085	145
1787	1.1339999	1106	27.9999
1788	1.052	891	161
1789	0.96600002	862	104.00002
1790	1.1339999	1018	115.9999
1791	1.118	1010	108
1792	1.21	1120	90
1793	1.171	1262	-91
1794	1.01	1040	-30
1795	1.079	1104	-25
1796	1.063	1125	-62
1797	1.0369999	1146	-109.0001
1798	1.128	1144	-16
1799	1.069	1034	35
1800	1.0880001	1068	20.0001000000000
1801	1.2180001	1247	-28.9999
1802	1.114	1050	64
1803	0.94099998	844	96.99998
1804	1.217	1133	84
1805	1.2920001	1064	228.0001
1806	1.284	1190	94
1807	1.136	1050	86
1808	1.239	1204	35
1809	1.0650001	1047	18.0001000000000
1810	0.98500001	964	21.0000100000001
1811	0.935	896	39
1812	0.81999999	811	8.99999000000003
1813	1.0140001	1053	-38.9998999999999
1814	0.75800002	770	-11.9999800000001
1815	0.79500002	811	-15.9999799999999
1816	0.90799999	880	27.99999
1817	0.70499998	740	-35.0000200000001
1818	0.93000001	927	3.00000999999997
1819	0.81099999	703	107.99999
1820	0.88999999	729	160.99999
1821	0.77499998	608	166.99998
1822	0.824	708	116
1823	0.92199999	797	124.99999
1824	0.79699999	684	112.99999
1825	0.86900002	815	54.0000200000000
1826	0.838	839	-1
1827	0.80599999	743	62.99999
1828	1.053	960	93
1829	0.90200001	815	87.00001
1830	0.83099997	712	118.99997
1831	0.79100001	696	95.00001
1832	0.88999999	895	-5.00001000000009
1833	0.85000002	933	-82.99998
1834	0.76200002	853	-90.99998
1835	0.61900002	633	-13.9999800000001
1836	0.787	829	-42
1837	0.79900002	914	-114.99998
1838	0.73699999	915	-178.00001
1839	0.60299999	753	-150.00001
1840	0.69499999	858	-163.00001
1841	0.66100001	780	-118.99999
1842	0.64099997	750	-109.00003
1843	0.60799998	826	-218.00002
1844	0.70499998	872	-167.00002
1845	0.52499998	731	-206.00002
1846	0.55199999	757	-205.00001
1847	0.66000003	756	-95.99997
1848	0.74599999	988	-242.00001
1849	0.50800002	651	-142.99998
1850	0.50300002	565	-61.99998
1851	0.68300003	839	-155.99997
1852	0.73699999	891	-154.00001
1853	0.755	928	-173
1854	0.74800003	921	-172.99997
1855	0.83899999	917	-78.00001
1856	0.67199999	696	-24.0000100000000
1857	0.787	934	-147
1858	0.85000002	1021	-170.99998
1859	0.884	1106	-222
1860	0.82099998	952	-131.00002
1861	0.83899999	983	-144.00001
1862	0.74699998	920	-173.00002
1863	0.71899998	826	-107.00002
1864	0.75400001	973	-218.99999
1865	0.78500003	1035	-249.99997
1866	0.83999997	1037	-197.00003
1867	0.898	1101	-203
1868	0.83600003	925	-88.99997
1869	0.76999998	848	-78.00002
1870	0.75999999	858	-98.0000100000001
1871	0.958	1114	-156
1872	0.71700001	814	-96.99999
1873	0.87099999	913	-42.0000100000001
1874	0.87699997	1000	-123.00003
1875	1.0369999	1173	-136.0001
1876	0.90799999	1040	-132.00001
1877	0.829	874	-45
1878	0.79100001	838	-46.99999
1879	0.77999997	952	-172.00003
1880	0.81599998	908	-92.00002
1881	0.83700001	997	-159.99999
1882	0.91500002	1048	-132.99998
1883	0.78899997	889	-100.00003
1884	0.87300003	1097	-223.99997
1885	0.81	1018	-208
1886	0.85500002	1097	-241.99998
1887	0.66299999	757	-94.00001
1888	1.1900001	1348	-157.9999
1889	1.038	1129	-91
1890	0.97600001	1099	-122.99999
1891	1.044	1151	-107
1892	0.76499999	831	-66.0000100000001
1893	0.93400002	1089	-154.99998
1894	0.88800001	914	-25.9999900000000
1895	0.98699999	1092	-105.00001
1896	1.086	1164	-78
1897	1.075	1125	-50
1898	1.034	1123	-89
1899	0.97799999	1111	-133.00001
1900	0.80800003	878	-69.9999700000001
1901	0.99900001	1138	-138.99999
1902	0.93599999	1060	-124.00001
1903	1.008	1202	-194
1904	0.838	934	-96
1905	0.98900002	1129	-139.99998
1906	1.007	1120	-113.00
1907	0.95300001	1122	-168.99999
1908	1.002	1107	-105
1909	1.031	1105	-74
1910	1.017	996	20.9999999999999
1911	0.96600002	1003	-36.9999800000001
1912	0.82700002	872	-44.9999800000001
1913	1.071	1209	-138
1914	1.22	1104	116
1915	1.073	993	80
1916	1.034	1007	27
1917	1.132	1098	34
1918	1.223	1142	81
1919	1.0039999	933	70.9998999999999
1920	1.197	1118	79
1921	1.249	1067	182
1922	1.1569999	1089	67.9999
1923	1.757	1465	292
1924	1.326	1166	160
1925	1.363	1156	207
1926	1.225	1093	132
1927	1.3940001	1223	171.0001
1928	1.411	1028	383
1929	1.351	1044	307
1930	1.377	1175	202
1931	1.255	1055	200
1932	1.23	1001	229
1933	1.152	1028	124
1934	1.4529999	1375	77.9999
1935	1.702	1490	212
1936	1.732	1391	341
1937	1.516	1271	245
1938	1.4579999	1326	131.999900000000
1939	1.574	1415	159
1940	1.3150001	1022	293.0001
1941	1.503	1240	263
1942	1.406	1060	346
1943	1.619	1116	503
1944	1.363	1063	300
1945	1.5	1259	241
1946	1.732	1333	399
1947	1.429	1117	312
1948	1.434	1283	151
1949	1.152	895	257
1950	1.443	1257	186
1951	1.233	985	248
1952	1.336	1140	196
1953	1.39	1165	225
1954	1.725	1287	438
1955	1.63	1145	485
1956	1.377	1018	359
1957	1.377	1131	246
1958	1.55	1287	263
1959	1.34	1109	231
1960	1.498	1196	302
1961	1.534	1415	119
1962	1.341	1284	57
1963	1.0829999	1027	55.9998999999998
1964	1.41	1468	-58
1965	1.528	1343	185
1966	1.426	1317	109
1967	1.145	1093	52
1968	1.307	1221	86
1969	1.0319999	1090	-58.0001
1970	0.99900001	878	121.00001
1971	1.4220001	1169	253.0001
1972	1.222	1084	138
1973	1.071	844	227
1974	1.135	959	176
1975	1.224	946	278
1976	1.224	863	361
1977	1.224	983	241
1978	1.224	964	260
1979	1.224	755	469
1980	1.224	917	307
1981	NA	795	NA
1982	NA	1064	NA
1983	NA	988	NA
1984	NA	829	NA
1985	NA	829	NA
1986	NA	838	NA
1987	NA	695	NA
1988	NA	663	NA
1989	NA	766	NA
1990	NA	682	NA
1991	NA	531	NA
1992	NA	646	NA
1993	NA	NA	NA
1994	NA	NA	NA