This file contains the monthly mean baseline (background) methane (CH4) concentration measured at the Cape Grim Baseline Air Pollution Station (CGBAPS), located near the north-west tip of Tasmania, Australia. CGBAPS is funded and managed by the Australian Bureau of Meteorology, and the scientific program is jointly supervised with CSIRO Oceans & Atmosphere. Please acknowledge these two institutions if these data are used in publications or presentations. For more information on Cape Grim please see: http://www.csiro.au/greenhouse-gases/ https://www.csiro.au/en/Research/OandA/Areas/Assessing-our-climate/Greenhouse-gas-data http://www.bom.gov.au/inside/cgbaps/ The CH4 units are parts per billion in dry air (ppb). The most recent year of data is provided in this file on a provisional basis only. These data may be subject to further revision. CSIRO & the Bureau make every effort to produce the most accurate and precise measurements possible. However, they reserve the right to make corrections to the data based on recalibration of standard gases or for other reasons deemed scientifically justified. Please see the full terms & conditions at the end of this file. Release Date: November 2020 YYYY MM DD DATE CH4(ppb) SD(ppb) Source 1978 04 26 1978.3178 1479.00 0.70 Cape Grim air archive 1978 07 07 1978.5151 1497.10 0.70 Cape Grim air archive 1979 02 06 1979.1014 1495.10 1.80 Cape Grim air archive 1980 09 03 1980.6749 1540.10 0.40 Cape Grim air archive 1984 05 23 1984.3934 1590.90 0.50 Cape Grim air archive 1984 08 15 1984.6202 1610.72 0.14 flask 1984 09 15 1984.7049 1608.39 3.04 flask 1984 10 15 1984.7869 1605.23 2.44 flask 1984 11 15 1984.8716 1602.22 2.19 flask 1984 12 15 1984.9536 1594.76 2.78 flask 1985 01 15 1985.0384 1586.65 2.27 flask 1985 02 15 1985.1233 1581.94 3.18 flask 1985 03 15 1985.2000 1582.66 3.02 flask 1985 04 15 1985.2849 1590.10 2.91 flask 1985 05 15 1985.3671 1597.99 1.93 flask 1985 06 15 1985.4521 1602.63 3.31 flask 1985 07 15 1985.5342 1610.49 4.32 flask 1985 08 15 1985.6192 1617.96 3.62 flask 1985 09 15 1985.7041 1619.58 1.88 flask 1985 10 15 1985.7863 1619.69 2.97 flask 1985 11 15 1985.8712 1615.35 3.21 flask 1985 12 15 1985.9534 1606.15 4.81 flask 1986 01 15 1986.0384 1600.20 1.75 flask 1986 02 15 1986.1233 1598.99 2.51 flask 1986 03 15 1986.2000 1599.85 2.65 flask 1986 04 15 1986.2849 1605.38 2.77 flask 1986 05 15 1986.3671 1612.76 2.78 flask 1986 06 15 1986.4521 1618.65 2.29 flask 1986 07 15 1986.5342 1626.14 3.22 flask 1986 08 15 1986.6192 1631.91 1.51 flask 1986 09 15 1986.7041 1633.49 1.58 flask 1986 10 15 1986.7863 1632.83 1.60 flask 1986 11 15 1986.8712 1629.51 2.30 flask 1986 12 15 1986.9534 1622.99 3.49 flask 1987 01 15 1987.0384 1615.26 2.51 flask 1987 02 15 1987.1233 1611.41 1.49 flask 1987 03 15 1987.2000 1612.63 1.93 flask 1987 04 15 1987.2849 1620.24 2.97 flask 1987 05 15 1987.3671 1629.02 4.06 flask 1987 06 15 1987.4521 1633.30 2.38 flask 1987 07 15 1987.5342 1639.45 3.13 flask 1987 08 15 1987.6192 1645.33 1.82 flask 1987 09 15 1987.7041 1646.60 1.53 flask 1987 10 15 1987.7863 1646.59 1.45 flask 1987 11 15 1987.8712 1643.82 3.91 flask 1987 12 15 1987.9534 1637.48 2.84 flask 1988 01 15 1988.0383 1629.77 3.13 flask 1988 02 15 1988.1230 1622.40 2.48 flask 1988 03 15 1988.2022 1622.60 3.42 flask 1988 04 15 1988.2869 1630.18 4.68 flask 1988 05 15 1988.3689 1636.95 2.60 flask 1988 06 15 1988.4536 1642.97 2.73 flask 1988 07 15 1988.5355 1650.05 2.07 flask 1988 08 15 1988.6202 1655.04 2.36 flask 1988 09 15 1988.7049 1658.03 2.08 flask 1988 10 15 1988.7869 1658.14 1.91 flask 1988 11 15 1988.8716 1651.98 3.93 flask 1988 12 15 1988.9536 1643.75 2.57 flask 1989 01 15 1989.0384 1641.59 2.93 flask 1989 02 15 1989.1233 1642.64 2.53 flask 1989 03 15 1989.2000 1640.49 2.14 flask 1989 04 15 1989.2849 1642.09 2.68 flask 1989 05 15 1989.3671 1649.81 4.09 flask 1989 06 15 1989.4521 1657.42 2.00 flask 1989 07 15 1989.5342 1663.96 2.73 flask 1989 08 15 1989.6192 1668.43 2.33 flask 1989 09 15 1989.7041 1669.36 1.95 flask 1989 10 15 1989.7863 1668.40 2.24 flask 1989 11 15 1989.8712 1664.54 2.58 flask 1989 12 15 1989.9534 1656.95 3.70 flask 1990 01 15 1990.0384 1648.70 2.53 flask 1990 02 15 1990.1233 1644.24 1.66 flask 1990 03 15 1990.2000 1645.37 1.66 flask 1990 04 15 1990.2849 1650.99 2.22 flask 1990 05 15 1990.3671 1659.23 2.94 flask 1990 06 15 1990.4521 1666.21 3.76 flask 1990 07 15 1990.5342 1671.14 2.02 flask 1990 08 15 1990.6192 1674.71 2.36 flask 1990 09 15 1990.7041 1676.44 2.47 flask 1990 10 15 1990.7863 1676.53 1.42 flask 1990 11 15 1990.8712 1673.78 2.21 flask 1990 12 15 1990.9534 1665.72 3.48 flask 1991 01 15 1991.0384 1655.78 2.49 flask 1991 02 15 1991.1233 1652.51 1.17 flask 1991 03 15 1991.2000 1654.41 1.54 flask 1991 04 15 1991.2849 1660.14 3.53 flask 1991 05 15 1991.3671 1669.36 4.70 flask 1991 06 15 1991.4521 1675.72 3.52 flask 1991 07 15 1991.5342 1681.19 2.34 flask 1991 08 15 1991.6192 1685.36 2.21 flask 1991 09 15 1991.7041 1688.60 2.21 flask 1991 10 15 1991.7863 1694.28 4.52 flask 1991 11 15 1991.8712 1690.90 3.43 flask 1991 12 15 1991.9534 1680.70 3.26 flask 1992 01 15 1992.0383 1674.90 2.98 flask 1992 02 15 1992.1230 1672.46 0.39 flask 1992 03 15 1992.2022 1672.94 1.73 flask 1992 04 15 1992.2869 1676.68 1.64 flask 1992 05 15 1992.3689 1682.60 2.35 flask 1992 06 15 1992.4536 1689.46 2.64 flask 1992 07 15 1992.5355 1695.93 2.55 flask 1992 08 15 1992.6202 1700.66 1.98 flask 1992 09 15 1992.7049 1702.12 1.85 flask 1992 10 15 1992.7869 1698.35 2.37 flask 1992 11 15 1992.8716 1692.53 3.63 flask 1992 12 15 1992.9536 1686.57 2.65 flask 1993 01 15 1993.0384 1676.85 3.57 flask 1993 02 15 1993.1233 1671.31 1.62 flask 1993 03 15 1993.2000 1673.51 3.50 flask 1993 04 15 1993.2849 1679.27 2.61 flask 1993 05 15 1993.3671 1686.10 3.17 flask 1993 06 15 1993.4521 1691.71 1.75 flask 1993 07 15 1993.5342 1696.54 4.41 flask 1993 08 15 1993.6192 1701.04 1.81 flask 1993 09 15 1993.7041 1702.61 0.22 flask 1993 10 15 1993.7863 1701.14 2.35 flask 1993 11 15 1993.8712 1696.61 2.12 flask 1993 12 15 1993.9534 1689.80 2.89 flask 1994 01 15 1994.0384 1681.73 2.38 flask 1994 02 15 1994.1233 1676.05 2.47 flask 1994 03 15 1994.2000 1676.04 2.35 flask 1994 04 15 1994.2849 1681.48 3.20 flask 1994 05 15 1994.3671 1689.89 3.77 flask 1994 06 15 1994.4521 1697.31 3.16 flask 1994 07 15 1994.5342 1703.24 2.97 flask 1994 08 15 1994.6192 1706.71 2.52 flask 1994 09 15 1994.7041 1707.11 2.57 flask 1994 10 15 1994.7863 1708.02 1.28 flask 1994 11 15 1994.8712 1704.83 2.78 flask 1994 12 15 1994.9534 1696.90 3.29 flask 1995 01 15 1995.0384 1689.88 2.58 flask 1995 02 15 1995.1233 1685.47 1.15 flask 1995 03 15 1995.2000 1684.36 2.04 flask 1995 04 15 1995.2849 1688.08 2.03 flask 1995 05 15 1995.3671 1695.04 3.29 flask 1995 06 15 1995.4521 1701.10 3.33 flask 1995 07 15 1995.5342 1706.02 2.19 flask 1995 08 15 1995.6192 1711.52 2.07 flask 1995 09 15 1995.7041 1714.68 1.91 flask 1995 10 15 1995.7863 1713.55 2.43 flask 1995 11 15 1995.8712 1710.05 2.31 flask 1995 12 15 1995.9534 1702.88 3.45 flask 1996 01 15 1996.0383 1693.35 3.41 flask 1996 02 15 1996.1230 1686.67 2.50 flask 1996 03 15 1996.2022 1684.71 3.22 flask 1996 04 15 1996.2869 1689.91 3.09 flask 1996 05 15 1996.3689 1698.19 3.00 flask 1996 06 15 1996.4536 1703.65 2.79 flask 1996 07 15 1996.5355 1708.94 2.48 flask 1996 08 15 1996.6202 1714.49 2.65 flask 1996 09 15 1996.7049 1716.59 2.15 flask 1996 10 15 1996.7869 1714.86 2.08 flask 1996 11 15 1996.8716 1709.83 2.79 flask 1996 12 15 1996.9536 1702.30 3.08 flask 1997 01 15 1997.0384 1694.56 2.56 flask 1997 02 15 1997.1233 1691.27 1.66 flask 1997 03 15 1997.2000 1695.06 3.10 flask 1997 04 15 1997.2849 1699.98 2.73 flask 1997 05 15 1997.3671 1705.39 2.93 flask 1997 06 15 1997.4521 1712.39 2.04 flask 1997 07 15 1997.5342 1717.66 2.08 flask 1997 08 15 1997.6192 1722.23 1.83 flask 1997 09 15 1997.7041 1723.26 1.70 flask 1997 10 15 1997.7863 1720.40 2.17 flask 1997 11 15 1997.8712 1715.89 2.06 flask 1997 12 15 1997.9534 1711.04 2.32 flask 1998 01 15 1998.0384 1704.65 2.64 flask 1998 02 15 1998.1233 1698.98 1.84 flask 1998 03 15 1998.2000 1697.59 2.26 flask 1998 04 15 1998.2849 1700.98 2.96 flask 1998 05 15 1998.3671 1709.74 4.18 flask 1998 06 15 1998.4521 1718.65 2.45 flask 1998 07 15 1998.5342 1724.07 3.20 flask 1998 08 15 1998.6192 1729.08 1.76 flask 1998 09 15 1998.7041 1732.86 1.96 flask 1998 10 15 1998.7863 1732.65 1.11 flask 1998 11 15 1998.8712 1728.01 3.40 flask 1998 12 15 1998.9534 1720.81 3.03 flask 1999 01 15 1999.0384 1714.12 2.08 flask 1999 02 15 1999.1233 1709.80 1.93 flask 1999 03 15 1999.2000 1709.42 2.00 flask 1999 04 15 1999.2849 1714.44 2.66 flask 1999 05 15 1999.3671 1722.40 3.37 flask 1999 06 15 1999.4521 1730.06 2.71 flask 1999 07 15 1999.5342 1735.90 2.57 flask 1999 08 15 1999.6192 1739.06 2.09 flask 1999 09 15 1999.7041 1741.00 1.44 flask 1999 10 15 1999.7863 1741.33 1.94 flask 1999 11 15 1999.8712 1735.72 3.17 flask 1999 12 15 1999.9534 1726.50 3.21 flask 2000 01 15 2000.0383 1717.90 3.04 flask 2000 02 15 2000.1230 1711.90 1.94 flask 2000 03 15 2000.2022 1711.83 1.94 flask 2000 04 15 2000.2869 1717.94 3.76 flask 2000 05 15 2000.3689 1724.92 3.14 flask 2000 06 15 2000.4536 1732.11 2.69 flask 2000 07 15 2000.5355 1737.92 2.53 flask 2000 08 15 2000.6202 1739.80 1.51 flask 2000 09 15 2000.7049 1740.61 1.76 flask 2000 10 15 2000.7869 1740.23 1.71 flask 2000 11 15 2000.8716 1735.46 3.91 flask 2000 12 15 2000.9536 1726.75 3.63 flask 2001 01 15 2001.0384 1716.88 3.03 flask 2001 02 15 2001.1233 1710.43 1.46 flask 2001 03 15 2001.2000 1710.56 1.99 flask 2001 04 15 2001.2849 1715.30 2.25 flask 2001 05 15 2001.3671 1723.02 2.66 flask 2001 06 15 2001.4521 1731.23 3.22 flask 2001 07 15 2001.5342 1737.07 1.66 flask 2001 08 15 2001.6192 1740.11 1.83 flask 2001 09 15 2001.7041 1741.34 1.68 flask 2001 10 15 2001.7863 1738.87 2.28 flask 2001 11 15 2001.8712 1732.14 3.54 flask 2001 12 15 2001.9534 1724.16 3.88 flask 2002 01 15 2002.0384 1715.57 2.40 flask 2002 02 15 2002.1233 1711.21 1.05 flask 2002 03 15 2002.2000 1712.41 2.58 flask 2002 04 15 2002.2849 1717.36 2.03 flask 2002 05 15 2002.3671 1724.88 2.91 flask 2002 06 15 2002.4521 1732.76 2.98 flask 2002 07 15 2002.5342 1738.66 1.96 flask 2002 08 15 2002.6192 1741.81 2.17 flask 2002 09 15 2002.7041 1742.92 0.77 flask 2002 10 15 2002.7863 1741.80 1.74 flask 2002 11 15 2002.8712 1737.19 2.34 flask 2002 12 15 2002.9534 1728.67 3.37 flask 2003 01 15 2003.0384 1719.06 2.74 flask 2003 02 15 2003.1233 1712.88 1.63 flask 2003 03 15 2003.2000 1712.45 1.88 flask 2003 04 15 2003.2849 1718.42 2.60 flask 2003 05 15 2003.3671 1726.63 2.58 flask 2003 06 15 2003.4521 1732.50 2.97 flask 2003 07 15 2003.5342 1737.03 1.75 flask 2003 08 15 2003.6192 1741.73 1.61 flask 2003 09 15 2003.7041 1744.54 1.63 flask 2003 10 15 2003.7863 1742.24 2.18 flask 2003 11 15 2003.8712 1735.85 2.93 flask 2003 12 15 2003.9534 1729.29 3.05 flask 2004 01 15 2004.0383 1720.93 2.84 flask 2004 02 15 2004.1230 1713.13 2.25 flask 2004 03 15 2004.2022 1710.94 2.77 flask 2004 04 15 2004.2869 1716.48 3.31 flask 2004 05 15 2004.3689 1725.23 3.02 flask 2004 06 15 2004.4536 1731.91 2.84 flask 2004 07 15 2004.5355 1738.44 2.74 flask 2004 08 15 2004.6202 1743.14 2.06 flask 2004 09 15 2004.7049 1743.40 1.91 flask 2004 10 15 2004.7869 1741.16 1.87 flask 2004 11 15 2004.8716 1734.88 2.82 flask 2004 12 15 2004.9536 1726.28 3.80 flask 2005 01 15 2005.0384 1717.54 2.91 flask 2005 02 15 2005.1233 1711.54 1.92 flask 2005 03 15 2005.2000 1711.78 3.19 flask 2005 04 15 2005.2849 1717.27 2.17 flask 2005 05 15 2005.3671 1725.42 3.93 flask 2005 06 15 2005.4521 1731.16 1.33 flask 2005 07 15 2005.5342 1735.18 3.39 flask 2005 08 15 2005.6192 1740.38 1.91 flask 2005 09 15 2005.7041 1742.04 0.91 flask 2005 10 15 2005.7863 1740.33 3.72 flask 2005 11 15 2005.8712 1735.97 1.78 flask 2005 12 15 2005.9534 1728.16 3.23 flask 2006 01 15 2006.0384 1718.59 4.41 flask 2006 02 15 2006.1233 1712.01 3.54 flask 2006 03 15 2006.2000 1712.09 2.50 flask 2006 04 15 2006.2849 1717.29 2.28 flask 2006 05 15 2006.3671 1723.30 3.27 flask 2006 06 15 2006.4521 1729.66 2.12 flask 2006 07 15 2006.5342 1734.85 3.95 flask 2006 08 15 2006.6192 1737.93 2.85 flask 2006 09 15 2006.7041 1740.41 1.75 flask 2006 10 15 2006.7863 1740.09 2.33 flask 2006 11 15 2006.8712 1735.76 3.90 flask 2006 12 15 2006.9534 1727.91 2.96 flask 2007 01 15 2007.0384 1718.16 2.67 flask 2007 02 15 2007.1233 1712.65 1.86 flask 2007 03 15 2007.2000 1714.02 2.30 flask 2007 04 15 2007.2849 1720.11 2.13 flask 2007 05 15 2007.3671 1727.98 2.96 flask 2007 06 15 2007.4521 1736.27 3.11 flask 2007 07 15 2007.5342 1742.42 2.52 flask 2007 08 15 2007.6192 1745.59 1.63 flask 2007 09 15 2007.7041 1748.55 2.02 flask 2007 10 15 2007.7863 1748.74 1.71 flask 2007 11 15 2007.8712 1744.02 2.31 flask 2007 12 15 2007.9534 1736.74 2.52 flask 2008 01 15 2008.0383 1729.31 2.79 flask 2008 02 15 2008.1230 1724.48 2.00 flask 2008 03 15 2008.2022 1726.00 3.49 flask 2008 04 15 2008.2869 1732.79 4.09 flask 2008 05 15 2008.3689 1738.05 1.70 flask 2008 06 15 2008.4536 1742.45 2.90 flask 2008 07 15 2008.5355 1750.36 3.35 flask 2008 08 15 2008.6202 1755.93 1.47 flask 2008 09 15 2008.7049 1755.92 2.21 flask 2008 10 15 2008.7869 1754.51 2.41 flask 2008 11 15 2008.8716 1749.14 3.95 flask 2008 12 15 2008.9536 1738.85 3.58 flask 2009 01 15 2009.0384 1730.34 3.84 flask 2009 02 15 2009.1233 1726.04 0.68 flask 2009 03 15 2009.2000 1726.66 2.10 flask 2009 04 15 2009.2849 1732.16 2.39 flask 2009 05 15 2009.3671 1738.82 3.84 flask 2009 06 15 2009.4521 1745.96 4.16 flask 2009 07 15 2009.5342 1752.81 2.61 flask 2009 08 15 2009.6192 1758.16 1.63 flask 2009 09 15 2009.7041 1760.28 1.62 flask 2009 10 15 2009.7863 1759.02 1.65 flask 2009 11 15 2009.8712 1753.57 2.88 flask 2009 12 15 2009.9534 1743.38 3.67 flask 2010 01 15 2010.0384 1735.35 2.37 flask 2010 02 15 2010.1233 1731.99 1.14 flask 2010 03 15 2010.2000 1732.32 2.33 flask 2010 04 15 2010.2849 1736.56 1.55 flask 2010 05 15 2010.3671 1742.23 2.32 flask 2010 06 15 2010.4521 1751.73 3.95 flask 2010 07 15 2010.5342 1762.06 3.02 flask 2010 08 15 2010.6192 1765.86 1.40 flask 2010 09 15 2010.7041 1766.06 1.41 flask 2010 10 15 2010.7863 1765.39 1.12 flask 2010 11 15 2010.8712 1761.71 1.70 flask 2010 12 15 2010.9534 1754.41 3.36 flask 2011 01 15 2011.0384 1745.14 3.36 flask 2011 02 15 2011.1233 1739.75 1.01 flask 2011 03 15 2011.2000 1742.54 2.27 flask 2011 04 15 2011.2849 1749.89 1.77 flask 2011 05 15 2011.3671 1753.64 4.13 flask 2011 06 15 2011.4521 1758.17 2.28 flask 2011 07 15 2011.5342 1765.24 2.79 flask 2011 08 15 2011.6192 1770.24 1.26 flask 2011 09 15 2011.7041 1773.04 1.23 flask 2011 10 15 2011.7863 1772.44 1.43 flask 2011 11 15 2011.8712 1766.90 2.61 flask 2011 12 15 2011.9534 1757.88 2.84 flask 2012 01 15 2012.0383 1749.30 2.27 flask 2012 02 15 2012.1230 1743.98 2.09 flask 2012 03 15 2012.2022 1743.81 1.84 flask 2012 04 15 2012.2869 1750.03 2.70 flask 2012 05 15 2012.3689 1757.42 2.08 flask 2012 06 15 2012.4536 1763.81 2.12 flask 2012 07 15 2012.5355 1770.35 2.42 flask 2012 08 15 2012.6202 1775.50 1.74 flask 2012 09 15 2012.7049 1777.99 1.29 flask 2012 10 15 2012.7869 1776.52 1.38 flask 2012 11 15 2012.8716 1771.98 2.06 flask 2012 12 15 2012.9536 1763.68 3.35 flask 2013 01 15 2013.0384 1752.56 2.69 in situ 2013 02 15 2013.1233 1747.38 0.87 in situ 2013 03 15 2013.2000 1748.40 1.20 in situ 2013 04 15 2013.2849 1753.17 2.04 in situ 2013 05 15 2013.3671 1761.50 2.93 in situ 2013 06 15 2013.4521 1769.93 2.09 in situ 2013 07 15 2013.5342 1775.09 1.43 in situ 2013 08 15 2013.6192 1779.33 1.32 in situ 2013 09 15 2013.7041 1781.75 0.56 in situ 2013 10 15 2013.7863 1779.78 1.37 in situ 2013 11 15 2013.8712 1774.08 2.16 in situ 2013 12 15 2013.9534 1765.75 2.87 in situ 2014 01 15 2014.0384 1756.52 2.44 in situ 2014 02 15 2014.1233 1752.04 0.73 in situ 2014 03 15 2014.2000 1754.62 1.73 in situ 2014 04 15 2014.2849 1760.99 2.21 in situ 2014 05 15 2014.3671 1769.32 2.92 in situ 2014 06 15 2014.4521 1779.26 2.94 in situ 2014 07 15 2014.5342 1787.21 1.90 in situ 2014 08 15 2014.6192 1791.37 1.00 in situ 2014 09 15 2014.7041 1792.62 0.43 in situ 2014 10 15 2014.7863 1791.40 0.96 in situ 2014 11 15 2014.8712 1786.91 1.90 in situ 2014 12 15 2014.9534 1779.15 2.72 in situ 2015 01 15 2015.0384 1770.36 2.38 in situ 2015 02 15 2015.1233 1765.46 0.78 in situ 2015 03 15 2015.2000 1767.17 1.57 in situ 2015 04 15 2015.2849 1773.55 2.25 in situ 2015 05 15 2015.3671 1781.11 2.40 in situ 2015 06 15 2015.4521 1788.89 2.32 in situ 2015 07 15 2015.5342 1795.83 1.97 in situ 2015 08 15 2015.6192 1800.52 1.24 in situ 2015 09 15 2015.7041 1802.39 0.60 in situ 2015 10 15 2015.7863 1801.23 0.96 in situ 2015 11 15 2015.8712 1796.49 2.04 in situ 2015 12 15 2015.9534 1788.39 2.87 in situ 2016 01 15 2016.0383 1779.16 2.53 in situ 2016 02 15 2016.1229 1773.95 0.86 in situ 2016 03 15 2016.2022 1775.29 1.43 in situ 2016 04 15 2016.2869 1780.37 1.90 in situ 2016 05 15 2016.3689 1787.54 2.56 in situ 2016 06 15 2016.4536 1795.94 2.35 in situ 2016 07 15 2016.5355 1801.94 1.46 in situ 2016 08 15 2016.6202 1805.21 0.94 in situ 2016 09 15 2016.7049 1806.98 0.68 in situ 2016 10 15 2016.7869 1805.50 1.27 in situ 2016 11 15 2016.8716 1799.20 2.55 in situ 2016 12 15 2016.9536 1789.66 3.12 in situ 2017 01 15 2017.0384 1780.47 2.32 in situ 2017 02 15 2017.1233 1776.20 0.71 in situ 2017 03 15 2017.2000 1777.46 1.28 in situ 2017 04 15 2017.2849 1782.98 2.31 in situ 2017 05 15 2017.3671 1792.38 3.24 in situ 2017 06 15 2017.4521 1802.36 2.68 in situ 2017 07 15 2017.5342 1809.72 1.95 in situ 2017 08 15 2017.6192 1814.83 1.25 in situ 2017 09 15 2017.7041 1816.96 0.53 in situ 2017 10 15 2017.7863 1815.55 1.25 in situ 2017 11 15 2017.8712 1810.63 2.09 in situ 2017 12 15 2017.9534 1802.37 2.86 in situ 2018 01 15 2018.0384 1793.52 2.30 in situ 2018 02 15 2018.1233 1789.15 0.72 in situ 2018 03 15 2018.2000 1790.94 1.59 in situ 2018 04 15 2018.2849 1797.99 2.61 in situ 2018 05 15 2018.3671 1806.87 2.67 in situ 2018 06 15 2018.4521 1814.60 2.14 in situ 2018 07 15 2018.5342 1821.24 1.97 in situ 2018 08 15 2018.6192 1826.48 1.31 in situ 2018 09 15 2018.7041 1828.78 0.54 in situ 2018 10 15 2018.7863 1827.13 1.30 in situ 2018 11 15 2018.8712 1820.71 2.58 in situ 2018 12 15 2018.9534 1811.16 3.03 in situ 2019 01 15 2019.0384 1802.38 2.17 in situ 2019 02 15 2019.1233 1798.16 0.71 in situ 2019 03 15 2019.2000 1798.93 1.14 in situ 2019 04 15 2019.2849 1803.80 2.00 in situ 2019 05 15 2019.3671 1811.29 2.54 in situ 2019 06 15 2019.4521 1819.28 2.33 in situ 2019 07 15 2019.5342 1826.25 1.96 in situ 2019 08 15 2019.6192 1831.44 1.26 in situ 2019 09 15 2019.7041 1833.50 0.43 in situ 2019 10 15 2019.7863 1832.02 1.13 in situ 2019 11 15 2019.8712 1826.66 2.30 in situ 2019 12 15 2019.9534 1817.63 3.08 in situ 2020 01 15 2020.0383 1808.25 2.44 in situ 2020 02 15 2020.1229 1803.48 0.81 in situ 2020 03 15 2020.2022 1804.78 1.27 in situ 2020 04 15 2020.2869 1809.93 1.93 in situ 2020 05 15 2020.3689 1817.33 2.65 in situ 2020 06 15 2020.4536 1826.29 2.73 in situ 2020 07 15 2020.5355 1834.39 2.17 in situ 2020 08 15 2020.6202 1840.07 1.37 in situ 2020 09 15 2020.7049 1842.80 0.61 in situ 2020 10 15 2020.7869 1842.25 0.92 in situ Terms of Use 1. Terminology ‘Content’ means the content of the site [http://www.csiro.au/greenhouse-gases] including but not limited to, data, information, databases, images and material. ‘you/user’ means you as a website user, or Content/data user. 2. Using Content CSIRO reserves the right to make corrections, revisions, updates and improvements to any Content on this site but is under no obligation to do so. Without limiting the foregoing, the most recent year of data is provided in this site on a provisional basis only and may be subject to further revision. If you use or download Content from this site, you acknowledge that such Content: - may contain statements based on scientific research and comprises data collected by CSIRO and third parties; - is not professional, scientific, medical, technical or expert advice and is subject to the usual uncertainties of advanced scientific and technical research; - should not be relied upon as the basis for doing or failing to do something. References or links to third party data are provided for information and convenience only and do not mean that CSIRO endorses or approves that data. Any use of the Content must acknowledge the source of the Information as "CSIRO Oceans & Atmosphere and the Australian Bureau of Meteorology (Cape Grim Baseline Air Pollution Station)" and include a statement that CSIRO and the Australian Bureau of Meteorology give no warranty regarding the accuracy, completeness, currency or suitability for any particular purpose and accept no liability in respect of data. The Content on this site must not be distributed or disseminated to third parties without the attachment of the Terms of Use. 3. Grant of licence CSIRO grants you a royalty-free, non-exclusive, non-transferable licence to use, reproduce, adapt or communicate the Content on this site for any purpose other than a commercial purpose. For the purposes of this licence, "commercial purpose" means to sell, hire, exchange or otherwise exploit the Content (whether in its original or adapted form, or incorporated in products or services) for profit or gain. The rights granted under this licence are personal to the user and are not sub-licensable or capable of assignment. 4. Disclaimer If you use or download any Content from this site you accept all risks and responsibility for losses, damages, costs and other consequences resulting directly or indirectly from using the Content. To the maximum extent permitted by law, CSIRO excludes any and all liability to any person for any consequences, including but not limited to all losses, damages, costs, expenses and any other compensation, arising directly or indirectly from using the Content. Every effort has been made to ensure the accuracy of the Content on this site, however CSIRO does not warrant the accuracy and reliability of the Content and, to the extent permitted by law, does not guarantee or make any express or implied representation regarding the accuracy, reliability, correctness, fitness for use for any purpose whatsoever of the Content. Any use and/or interpretation of the Content is done so entirely at the user’s own risk. 5. Whole agreement Use of this site is subject also to CSIRO’s Legal Notice and Disclaimer (http://www.csiro.au/org/LegalNoticeAndDisclaimer.html). By using this site and the Content available on and through it, you are agreeing to be bound by these Terms of Use and the Legal Notice and Disclaimer. If there is any conflict then these Terns of Use will prevail, but only to the extent that it applies to the particular Content and to the extent necessary to resolve any conflict. CSIRO may change these Terms of Use at any time without giving you notice, so please check them each time you visit the site (http://www.csiro.au/greenhouse-gases).