************************************************************* *** Source: Thomas J. Conway *** *** Pieter Tans *** *** Lee S. Waterman *** *** National Oceanic & Atmospheric Administration *** *** Climate Monitoring and Diagnostics Laboratory *** *** 325 Broadway *** *** Boulder, Colorado 80303 *** ************************************************************* 1972 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 330.5 -99.99 1973 330.8 331.5 332.7 334.0 334.3 332.7 330.6 328.1 326.9 327.9 329.2 330.6 330.8 1974 332.2 333.2 333.8 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 1975 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 1976 -99.99 -99.99 -99.99 335.3 335.5 334.2 332.2 330.6 329.4 329.8 331.4 333.4 -99.99 1977 335.0 335.9 336.4 336.8 336.8 336.1 334.8 333.2 332.1 333.1 335.0 336.6 335.2 1978 337.8 338.6 339.3 339.8 339.7 338.0 335.2 332.7 332.2 333.8 335.9 337.6 336.7 1979 339.0 340.0 341.1 342.0 341.4 339.6 337.7 335.6 334.6 335.7 337.7 339.3 338.6 1980 341.0 342.1 342.8 343.3 342.7 341.1 339.7 337.7 336.3 337.3 339.5 341.0 340.4 1981 342.2 343.3 344.1 344.9 345.4 344.8 343.2 340.4 337.8 338.3 341.0 342.1 342.3 1982 342.6 343.7 344.5 345.2 344.6 343.2 340.9 337.3 336.1 338.2 340.2 341.8 341.5 1983 343.6 344.7 345.1 345.9 346.7 346.3 343.9 340.9 339.7 340.3 341.5 343.6 343.5 1984 345.8 346.2 346.9 348.0 348.1 347.0 344.8 342.5 341.1 342.2 344.5 346.1 345.3 1985 346.7 347.6 349.0 349.8 349.3 348.3 346.6 343.4 342.0 343.8 346.3 347.9 346.7 1986 348.9 349.5 350.1 350.8 350.7 349.5 348.0 345.2 343.3 344.5 347.0 349.0 348.0 1987 349.6 351.3 352.7 352.6 352.2 351.5 350.3 348.5 347.2 347.8 350.0 351.5 350.4 1988 352.4 352.9 354.1 355.3 355.0 353.9 352.3 350.1 349.3 350.5 352.5 353.7 352.7 1989 353.9 354.2 355.3 356.3 356.8 356.0 354.0 352.4 351.9 352.5 354.2 355.5 354.4 1990 355.8 356.5 357.5 358.8 359.2 357.6 355.0 352.0 351.7 354.9 356.3 355.9 355.9 1991 356.1 357.8 359.5 359.6 359.1 358.2 356.0 353.5 352.1 352.7 355.0 357.9 356.5 1992 359.0 358.7 359.2 361.0 360.7 357.8 355.5 353.6 353.7 355.6 356.5 356.9 357.4