************************************************************* *** Source: Thomas J. Conway *** *** Pieter Tans *** *** Lee S. Waterman *** *** National Oceanic & Atmospheric Administration *** *** Climate Monitoring and Diagnostics Laboratory *** *** 325 Broadway *** *** Boulder, Colorado 80303 *** ************************************************************* 1973 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 330.3 330.3 330.1 330.1 330.3 -99.99 1974 330.6 331.2 331.3 331.1 331.4 331.1 330.5 330.6 330.8 331.1 330.5 330.0 330.9 1975 330.6 330.6 330.2 329.7 329.7 330.6 330.9 330.7 331.5 331.6 330.9 330.5 330.6 1976 330.5 330.5 330.8 331.2 331.4 331.1 331.0 331.5 331.9 332.2 332.6 333.0 331.5 1977 333.0 332.6 332.2 332.7 332.8 332.6 332.8 332.9 332.7 333.0 333.1 333.7 332.8 1978 334.0 333.8 334.4 334.5 334.3 334.8 334.5 334.2 334.4 334.5 334.4 334.1 334.3 1979 334.8 335.5 335.8 335.9 335.6 335.8 335.8 335.8 336.2 336.7 336.8 336.7 336.0 1980 337.4 338.0 337.7 337.7 338.3 338.6 338.4 338.5 338.4 338.3 338.6 338.9 338.2 1981 339.2 339.1 339.4 339.3 338.6 338.8 339.1 339.1 339.0 339.1 339.5 339.8 339.2 1982 340.5 340.9 340.7 340.2 339.7 339.8 340.5 340.9 340.5 340.1 340.3 340.8 340.4 1983 340.8 340.5 340.6 340.8 341.2 341.6 341.8 341.7 341.6 341.8 342.0 342.4 341.4 1984 343.0 343.1 342.9 342.4 342.0 342.3 342.8 343.1 343.2 343.1 343.4 344.0 342.9 1985 344.3 344.6 344.8 344.3 343.9 344.2 344.5 344.5 344.3 344.5 344.9 345.1 344.5 1986 345.5 345.7 345.5 345.2 345.4 346.1 345.8 345.3 345.6 345.9 346.0 346.1 345.7 1987 346.5 347.0 347.0 346.6 346.7 347.0 347.2 347.6 348.0 348.2 348.6 349.1 347.5 1988 349.4 349.5 349.8 350.5 350.3 349.9 350.0 350.1 349.9 350.3 350.9 351.4 350.2 1989 351.8 351.9 351.8 352.1 352.0 351.3 351.3 351.4 351.3 351.5 351.8 352.0 351.7 1990 352.2 352.3 352.9 352.9 352.3 352.5 352.8 352.9 352.9 352.8 353.1 353.6 352.8 1991 354.2 354.7 354.4 353.9 354.0 354.1 354.3 354.0 353.6 353.7 354.4 354.7 354.2 1992 354.4 354.6 354.8 354.5 354.6 354.9 355.3 355.3 355.0 355.0 355.0 355.2 354.9