Core Depth Time Conductivity Comments "(cm, center)" (year AD) (mS/cm) (missing points) 1 1992.9 299.2 5 1990.2 316.2 9 1987.5 308.3 13 1984.7 305.5 17 1982.0 312.6 21 1979.0 304.8 25 1976.0 305.5 29 1973.0 309.0 33 1969.5 294.4 37 1965.9 304.8 41 1962.4 306.2 45 1958.9 311.2 49 1956.1 306.2 53 1953.7 302.7 57 1951.2 299.2 61 1948.7 281.8 65 1946.2 300.6 69 1943.7 297.9 73 1941.2 301.3 77 1937.3 301.3 81 1931.9 282.5 85 1926.5 276.7 89 1921.1 280.5 93 1915.7 294.4 97 1910.3 298.5 101 1904.9 314.1 105 1899.5 324.3 109 1894.1 302.0 113 1888.6 317.7 117 1883.2 292.4 121 1877.7 305.5 125 1872.2 310.5 129 1866.8 305.5 133 1861.3 281.2 137 1855.9 307.6 141 1850.4 266.7 145 1844.9 295.8 149 1839.5 301.3 153 1834.0 319.9 157 1828.6 296.5 161 1823.1 293.8 165 1817.5 314.1 169 1811.7 290.4 173 1805.9 307.6 177 1800.0 299.2 181 1794.2 306.2 185 1788.3 305.5 189 1782.5 305.5 193 1776.7 309.7 197 1770.8 284.4 201 1765.0 302.7 205 1759.2 319.9 209 1753.3 314.1 213 1747.5 305.5 217 1741.6 305.5 221 1735.8 300.6 225 1730.0 311.9 229 1724.1 314.1 233 1718.3 306.2 237 1712.4 353.2 241 1706.6 304.1 245 1700.8 311.2 249 1694.9 308.3 253 1689.1 302.7 257 1683.3 305.5 261 1677.4 309.7 265 1671.6 317.0 269 1665.7 311.2 273 1659.9 306.2 277 1654.1 313.3 281 1648.2 319.9 285 1642.4 315.5 289 1636.6 306.9 293 1630.7 315.5 297 1624.9 328.1 301 1619.0 no material 305 1613.2 313.3 309 1607.4 315.5 313 1601.5 306.9 317 1595.7 297.2 321 1589.8 354.8 325 1584.0 299.2 329 1578.2 327.3 333 1572.3 335.7 337 1566.5 312.6 341 1560.7 315.5 345 1554.8 317.0 349 1549.0 338.8 353 1543.1 369.8 357 1537.3 310.5 361 1531.5 294.4 365 1518.2 298.5 369 1502.6 303.4 373 1486.9 294.4 377 1471.2 287.1 381 1455.6 302.0 385 1439.9 304.1 389 1432.8 314.1 393 1428.5 343.6 397 1424.2 335.0 401 1419.9 352.4 405 1415.6 345.9 409 1411.3 306.2 413 1407.0 331.9 417 1402.7 601.2 421 1397.6 527.2 425 1391.2 671.4 429 1384.9 405.5 433 1378.5 354.8 437 1372.1 463.4 441 1365.7 372.4 445 1359.3 365.6 449 1353.0 362.2 453 1346.6 354.8 457 1340.2 329.6 461 1333.8 353.2 465 1327.4 324.3 469 1321.1 324.3 473 1314.7 354.0 477 1308.3 333.4 481 1301.9 347.5 485 1295.5 341.2 489 1289.2 376.7 493 1282.8 391.7 497 1276.9 329.6 501 1272.4 339.6 505 1268.0 512.9 509 1263.5 476.4 513 1259.1 440.6 517 1254.6 493.2 521 1250.2 408.3 525 1245.7 399.0 529 1241.3 394.5 533 1236.8 413.0 537 1232.3 409.3 541 1220.0 895.4 545 1183.9 867.0 549 1147.8 552.1 553 1111.7 484.2 557 1075.6 477.5 561 1039.6 327.3 565 1008.8 500.0 569 993.9 429.5 573 979.1 379.3 577 964.2 no material 581 949.4 388.2 585 934.5 346.7 589 919.7 448.7 593 904.8 394.5 597 890.0 490.9 601 883.1 779.8