STATION	4508B	4508A

Jan-60	1328.5	
Feb-60	1329.9	
Mar-60	1329	
Apr-60	1318.5	
May-60	1323.5	
Jun-60	1307.6	
Jul-60	1302.3	
Aug-60	1298.2	
Sep-60	1290.5	
Oct-60	1295.9	
Nov-60	1284.4	
Dec-60	1298.8	
Jan-61	1289.7	
Feb-61	1294.9	
Mar-61	1285.6
Apr-61	1276.5
May-61	1279
Jun-61	1276
Jul-61	1273.3
Aug-61	1271
Sep-61	1268
Oct-61	1265.6
Nov-61	1263.4
Dec-61	1265.4
Jan-62	1265.6
Feb-62	1268.6
Mar-62	1270.2
Apr-62	1269.1
May-62	1269.5
Jun-62	1266.8
Dec-62	1258.2
Jan-63	1259.4
Feb-63	1262.7
Mar-63	1265.4
Apr-63	1268.6
May-63	1271.7
Jun-63	1267.2
Jul-63	1264.1
Aug-63	1262.2
Sep-63	1261.1
Oct-63	1261
Nov-63	1260.3
Dec-63	1262.5
Jan-64	1261.9
Feb-64	1263.7
Mar-64	1262.3
Apr-64	1263.5
May-64	1261.9
Jun-64	1258.8
Aug-64	1253.2
Sep-64	1251.9
Oct-64	1250.3
Nov-64	1248.2
Dec-64	1248.6
Jan-65	1246.9
Feb-65	1250.8
Mar-65	1251
Apr-65	1251.9
May-65	1251.9
Jun-65	1252.1
Jul-65	1250
Aug-65	1247.4
Sep-65	1246.1
Oct-65	1244.3
Nov-65	1247
Dec-65	1244.8
Jan-66	1245
Feb-66	1247.6
Mar-66	1253.1
Apr-66	1288.3
May-66	1320.4
Jun-66	1338
Jul-66	1351.7
Aug-66	1355.8
Sep-66	1357.7
Oct-66	1350.8
Nov-66	1348
Dec-66	1346.9
Jan-67	1349
Feb-67	1355.3
Mar-67	1363.2
Apr-67	1371.1
May-67	1381.4
Jun-67	1386.3
Jul-67	1401
Aug-67	1404.1
Sep-67	1402.2
Oct-67	1395.8
Nov-67	1391.8
Dec-67	1387.6
Jan-68	1385.4
Feb-68	1382.5
Mar-68	1380.2
Apr-68	1377.9
May-68	1372
Jun-68	1373.3
Jul-68	1363.2
Aug-68	1358.3
Sep-68	1352.3
Oct-68	1346.9
Nov-68	1342.8
Dec-68	1339.8
Jan-69	1339.7
Mar-69	1341.8
Apr-69	1373.1
May-69	1424.9
Jun-69	1454.9
Jul-69	1447.4
Aug-69	1444.5
Sep-69	1431.4
Oct-69	1422.2
Nov-69	1411.4
Dec-69	1405.7
Jan-70	1399.1
Feb-70	1395.2
Mar-70	1391
Apr-70	1388.4
May-70	1383.2
Jun-70	1378.2
Jul-70	1376
Aug-70	1378.1
Sep-70	1363.1
Oct-70	1359.8
Nov-70	1354.1
Dec-70	1351.2
Jan-71	1352
Feb-71	1352.1
Mar-71	1352
Apr-71	1349.8
May-71	1337
Jun-71	1330.1
Jul-71	1325.3
Aug-71	1326.6
Sep-71	1312.1
Oct-71	1310.5
Nov-71	1319.6
Dec-71	1318.8
Jan-72	1319.3
Feb-72	1319.6
Mar-72	1314.7
Apr-72	1299.8
May-72	1311
Jun-72	1297.7
Jul-72	1292.4
Aug-72	1290.1
Sep-72	1287.3
Oct-72	1287.6
Nov-72	1286.5
Dec-72	1296.1
Jan-73	1298.2
Feb-73	1300
Mar-73	1302.1
Apr-73	1303.7
May-73	1298.1
Jun-73	1304.8
Jul-73	1302.2
Aug-73	1297.4
Oct-73	1314.9
Nov-73	1308.3
Dec-73	1322.4
Jan-74	1333.4
Feb-74	1332.7
Mar-74	1335.3
Apr-74	1336.3
May-74	1327.3
Jun-74	1325.5
Jul-74	1323
Aug-74	1322.5
Sep-74	1312.1
Oct-74	1306.5
Nov-74	1319.2
Dec-74	1321.9
Jan-75	1323.1
Feb-75	1322.5
Mar-75	1322.9
Apr-75	1324.7
May-75	1324.1
Jun-75	1314.3
Jul-75	1305.2
Aug-75	1301.1
Sep-75	1299.2
Oct-75	1303.6
Nov-75	1303.6
Dec-75	1301.1
Jan-76	1296.9
Feb-76	1293.7
Mar-76	1306.3
Apr-76	1306.2
May-76	1296.4
Jun-76	1294.2
Jul-76	1289
Aug-76	1286.4
Sep-76	1286.5
Oct-76	1286.1
Nov-76	1285.9
Dec-76	1293.2
Jan-77	1294.5
Feb-77	1287.7
Mar-77	1290.9
Apr-77	1297.4
May-77	1294.3
Jun-77	1288.1
Jul-77	1286
Aug-77	1282.2
Sep-77	1282
Oct-77	1281.7
Nov-77	1280.6	
Jan-78	1290.6	
Feb-78	1293.2	
Mar-78	1297.8	
Apr-78	1361.1	
May-78	1436.2	1438
Jun-78	1449.2	1443.1
Jul-78	1429.4	1434.2
Aug-78	1436.6	1437
Sep-78		1443
Oct-78	1420.5	1408
Dec-78	1408.1	1397
Jan-79	1401.6	1385
Feb-79	1396.6	1391
Mar-79	1393.3	1385
Apr-79	1387.3	1381
May-79	1383.5	1376
Jun-79	1380.4	1374
Aug-79	1388.1	1383
Sep-79		1382
Oct-79	1384.2	1380
Nov-79	1381.9	1380
Dec-79	1379.1	1373.5
Jan-80	1376.8	
Feb-80		1373.5
Mar-80	1386.2	1385
Apr-80	1430.3	1430
May-80	1446.3	
Jul-80	1445.5	
Aug-80	1430.7	
Sep-80	1422.3	1408
Oct-80	1408.9	1402
Dec-80	1394.2	1387
Jan-81	1389.3	1382.5
Feb-81	1385.4	
Mar-81	1383.8	1380
Apr-81	1376.6	1368.5
May-81		1368.5
Sep-81		1344
Oct-81		1344
Nov-81		1342
Dec-81		1340
Jan-82		1339.5
Feb-82		1339.5
Mar-82		1340
Apr-82		1340
May-82		1355
Sep-82		1376
Oct-82		1374.5
Nov-82		1373
Dec-82		1374.5
Jan-83		1370
Feb-83		1373
Mar-83		1403
Apr-83		1441.5
May-83		1450
Jun-83		1452
Apr-84		1391
May-84		1383.5
Jul-84		1376
Aug-84		1370
Sep-84		1364
Oct-84		1362
Nov-84		1360.4
Dec-84		1359
Jan-85		1358.4
Feb-85		1357
Mar-85		1356
Apr-85		1350
May-85		1346
Jun-85		1343.5
Jul-85		1318
Aug-85		1332.4
Sep-85		1308
Oct-85		1326
Nov-85		1326
Jan-86		1324.4
Feb-86		1323
Mar-86		1328
Apr-86		1337
May-86		1324
Jun-86		1330
Jul-86		1332
Sep-86		1348
Oct-86		1349
Nov-86		1349.4
Dec-86		1346
Jan-87		1345
Feb-87		1341
Apr-87		1337
Oct-87		1283
Nov-87		1266
Dec-87		1274
Jan-88		1315
Feb-88		1317
Mar-88		1350
Apr-88		1297
May-88		1296
Jun-88		1288
Jul-88		1276
Aug-88		1264
Sep-88		1265
Oct-88		1298
Sep-89		1279
Oct-89		1282
Nov-89		1280
Jan-90		1280.5
Feb-90		1297
Mar-90		1293
Apr-90		1279
Jul-90		1277
Aug-90		1274
Sep-90		1272
Oct-90		1289.5
Jan-91		1289.5
Feb-91		1292
Mar-91		1293
Apr-91		1290.7
Jun-91		1329
Oct-91		1296
Nov-91		1288
Dec-91		1292
Jan-92		1309
Feb-92		1310.5
Mar-92		1311
Apr-92		1310
May-92		1312
Jun-92		1333.5
Jul-92		1337
Aug-92		1349
Sep-92		1351
Oct-92		1351
Nov-92		1340
Dec-92		1348
Feb-93		1410
Mar-93		1411
Apr-93		1418
Sep-93		1383.5
Oct-93		1377.7
Nov-93		1387
Dec-93		1395
Mar-94		1383.2
Apr-94		1378
May-94		1378
Jul-94		1311
Aug-94		1304
Sep-94		1301
Oct-94		1322
Oct-95		1344.1
Apr-96		1339
Oct-96		1337
Apr-97		1325
Oct-97		1339