|
|
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1953 | 204.0 | 89.3 | 152.4 | 179.7 | 149.0 | 183.8 | 115.4 | 110.8 | 1184.4 ] | ||||
| 1954 | 83.1 | 135.5 | 182.2 | 175.5 | 153.1 | 100.3 | 120.7 | 261.0 | 156.1 | 120.8 | 162.2 | 105.6 ) | 1756.1 |
| 1955 | 108.4 | 137.5 | 92.6 | 156.8 | 167.0 | 148.5 | 247.5 | 222.5 | 161.6 | 98.9 | 147.9 | 151.9 | 1841.1 |
| 1956 | 120.2 | 143.7 | 131.6 | 200.9 | 135.4 | 123.2 | 192.1 | 200.3 | 135.9 | 98.8 | 125.9 | 135.9 | 1743.9 |
| 1957 | 101.9 | 108.2 | 155.8 | 175.3 | 160.3 | 110.2 | 76.7 | 194.7 | 101.1 | 165.3 | 144.6 | 105.5 | 1599.6 |
| 1958 | 112.3 | 126.3 | 145.4 | 141.1 | 177.3 | 179.1 | 146.9 | 219.2 | 152.4 | 135.6 | 149.8 | 135.6 | 1821.0 |
| 1959 | 127.5 | 107.5 | 170.2 | 170.1 | 203.1 | 192.8 | 186.5 | 213.2 | 195.8 | 150.9 | 145.8 | 137.3 | 2000.7 |
| 1960 | 131.4 | 162.5 | 165.5 | 195.9 | 195.6 | 146.9 | 222.7 | 224.1 | 135.0 | 180.6 | 126.4 | 139.9 | 2026.5 |
| 1961 | 125.5 | 116.2 | 187.9 | 204.5 | 178.0 | 150.0 | 227.2 | 207.9 | 208.0 | 126.7 | 134.6 | 145.9 | 2012.4 |
| 1962 | 137.4 | 141.6 | 201.7 | 201.7 | 188.7 | 119.4 | 192.7 | 238.3 | 222.0 | 182.2 | 124.0 | 175.2 | 2124.9 |
| 1963 | 154.9 | 124.7 | 202.3 | 172.9 | 94.0 | 137.6 | 227.4 | 188.6 | 158.8 | 175.1 | 167.6 | 158.2 | 1962.1 |
| 1964 | 107.3 | 103.1 | 173.4 | 158.6 | 272.1 | 181.2 | 214.3 | 247.4 | 157.1 | 160.8 | 168.3 | 144.2 | 2087.8 |
| 1965 | 139.9 | 152.9 | 201.9 | 170.3 | 206.6 | 175.9 | 154.1 | 291.1 | 167.9 | 240.6 | 147.3 | 120.1 | 2168.6 |
| 1966 | 138.7 | 146.3 | 146.2 | 163.3 | 206.9 | 153.4 | 192.6 | 203.8 | 183.2 | 171.7 | 161.5 | 107.3 | 1974.9 |
| 1967 | 130.7 | 125.8 | 170.6 | 142.9 | 265.4 | 217.1 | 150.3 | 204.9 | 170.1 | 144.5 | 135.0 | 130.3 | 1987.6 |
| 1968 | 97.0 | 138.7 | 150.9 | 187.2 | 189.7 | 172.8 | 146.6 | 169.7 | 143.5 | 124.5 | 183.9 | 121.2 | 1825.7 |
| 1969 | 120.9 | 84.6 | 130.1 | 191.5 | 239.7 | 170.1 | 171.3 | 198.9 | 153.6 | 168.0 | 137.0 | 156.4 | 1922.1 |
| 1970 | 145.5 | 128.4 | 131.4 ) | 145.0 | 195.9 | 92.0 | 175.4 | 196.5 | 138.2 | 133.4 | 145.8 | 128.2 | 1755.7 |
| 1971 | 134.1 | 109.3 | 178.9 | 206.5 | 172.2 | 100.0 | 137.2 | 193.5 | 111.8 | 126.5 | 141.7 | 131.3 | 1743.0 |
| 1972 | 102.0 | 90.8 | 163.2 | 180.9 | 192.1 | 157.0 | 176.3 | 200.7 | 170.8 | 187.4 | 148.3 | 132.4 | 1901.9 |
| 1973 | 129.6 | 116.0 | 165.8 | 175.3 | 235.7 | 174.9 | 270.1 | 185.9 | 141.9 | 147.3 | 155.2 | 140.0 | 2037.7 |
| 1974 | 139.8 | 106.2 | 163.7 | 201.8 | 245.5 | 195.0 | 155.9 | 249.5 | 171.7 | 157.1 | 182.4 | 108.3 | 2076.9 |
| 1975 | 126.6 | 120.0 | 210.8 | 160.2 | 217.1 | 170.3 | 219.7 | 230.0 | 203.8 | 133.6 | 166.8 | 124.6 | 2083.5 |
| 1976 | 167.0 | 144.5 | 161.8 | 168.4 | 187.7 | 152.3 | 215.7 | 216.5 | 180.6 | 184.4 | 145.8 | 147.7 | 2072.4 |
| 1977 | 146.4 | 140.1 | 180.0 | 197.1 | 231.7 | 123.9 | 236.2 | 184.7 | 173.5 | 246.0 | 140.2 | 150.3 | 2150.1 |
| 1978 | 156.3 | 126.6 | 198.2 | 199.2 | 200.8 | 189.7 | 296.0 | 283.4 | 168.0 | 175.3 | 147.0 | 167.9 | 2308.4 |
| 1979 | 144.7 | 122.0 | 166.9 | 188.2 | 265.5 | 187.6 | 184.4 | 227.0 | 148.1 | 195.9 | 136.0 | 137.3 | 2103.6 |
| 1980 | 121.6 | 163.2 | 173.0 | 184.0 | 211.9 | 128.8 | 147.4 | 131.8 | 171.8 | 158.4 | 147.0 | 162.5 | 1901.4 |
| 1981 | 147.2 | 139.1 | 165.2 | 188.9 | 209.5 | 151.9 | 240.7 | 219.4 | 172.0 | 167.2 | 133.3 | 153.8 | 2088.2 |
| 1982 | 159.3 | 143.4 | 200.9 | 211.3 | 239.5 | 207.0 | 156.9 | 188.5 | 153.6 | 178.6 | 126.3 | 165.3 | 2130.6 |
| 1983 | 153.9 | 179.1 | 127.3 | 184.6 | 275.5 | 216.8 | 190.1 | 234.5 | 142.9 | 178.7 | 158.8 | 135.0 | 2177.2 |
| 1984 | 123.5 | 139.4 | 172.1 | 196.1 | 225.5 | 156.5 | 191.4 | 258.7 | 186.9 | 183.3 | 175.0 | 142.9 | 2151.3 |
| 1985 | 160.2 | 102.9 | 139.2 | 225.6 | 223.6 | 143.3 | 228.2 | 268.7 | 158.7 | 188.0 | 131.8 | 121.8 | 2092.0 |
| 1986 | 125.9 | 115.2 | 153.4 | 192.9 | 185.9 | 164.4 | 142.4 | 223.5 | 175.6 | 163.6 | 125.8 | 128.2 | 1896.8 |
| 1987 | 116.5 | 114.3 | 103.2 | 213.4 | 181.1 | 226.0 | 160.7 | 201.8 | 145.7 | 148.2 | 135.7 | 152.6 | 1899.2 |
| 1988 | 127.2 | 127.8 | 107.0 | 173.1 | 186.8 | 136.9 | 138.8 | 151.7 | 118.1 | 144.4 | 152.1 | 151.8 | 1715.7 |
| 1989 | 104.8 | 93.3 | 150.2 | 187.4 | 156.9 | 152.1 | 163.6 | 187.7 | 136.2 | 180.4 | 147.9 | 128.6 | 1789.1 |
| 1990 | 90.2 | 85.5 | 162.6 | 169.2 | 178.1 | 162.0 | 185.2 | 241.1 | 139.7 | 128.1 | 159.8 | 128.1 | 1829.6 |
| 1991 | 117.8 | 121.0 | 118.1 | 182.0 | 139.0 | 92.2 | 143.0 | 178.8 | 134.6 | 106.4 | 136.7 | 120.5 | 1590.1 |
| 1992 | 112.8 | 107.9 | 107.3 | 174.3 | 182.5 | 151.0 | 156.2 | 180.8 | 168.6 | 140.8 | 135.9 | 115.1 | 1733.2 |
| 1993 | 89.5 | 117.4 | 152.9 | 182.2 ) | 184.6 | 106.2 | 89.0 | 129.1 | 94.3 | 139.2 | 114.6 | 110.2 | 1509.2 |
| 1994 | 140.4 | 109.2 | 163.7 | 212.8 | 219.2 | 148.0 | 199.6 ) | 270.8 | 171.7 | 161.0 | 127.6 | 101.3 | 2025.3 |
| 1995 | 116.0 | 97.4 | 136.4 | 147.3 | 150.9 | 92.1 ) | 133.8 ) | 274.4 | 139.8 | 190.0 | 167.2 | 118.6 | 1763.9 |
| 1996 | 106.3 | 126.7 | 133.8 | 207.7 | 174.4 | 104.2 | 206.2 | 218.3 | 125.5 | 155.5 | 114.4 | 165.8 | 1838.8 |
| 1997 | 124.2 | 129.3 | 156.2 | 192.7 | 161.8 | 136.6 | 160.3 | 242.3 | 145.9 | 193.7 | 144.5 | 131.7 | 1919.2 |
| 1998 | 112.7 | 126.4 | 181.1 | 149.2 | 162.8 | 108.2 | 159.4 | 167.3 | 136.0 | 111.2 | 134.2 | 128.2 | 1676.7 |
| 1999 | 138.1 | 126.2 | 133.7 | 145.9 | 220.3 | 138.6 | 157.4 | 192.5 | 144.9 | 167.7 | 148.2 | 130.3 | 1843.8 |
| 2000 | 88.9 ) | 93.2 ) | 157.4 | 171.3 | 210.3 | 120.9 | 196.9 | 230.5 | 171.3 | 129.0 | 113.7 | 131.7 | 1815.1 |
| 2001 | 95.7 | 104.8 | 150.1 | 213.9 | 158.9 | 142.7 | 233.7 | 197.8 | 162.2 | 166.8 | 154.3 | 132.1 | 1913.0 |
| 2002 | 101.4 | 107.3 | 189.4 | 165.8 | 152.1 | 175.1 | 191.8 | 213.8 | 159.1 | 181.2 | 120.1 | 107.8 | 1864.9 |
| 2003 | 112.9 | 104.6 | 146.1 | 127.5 | 180.1 | 109.1 | 99.9 | 172.0 | 195.7 | 150.9 | 97.7 | 112.7 | 1609.2 |
| 2004 | 137.9 | 156.1 | 174.6 | 234.7 | 154.9 | 178.7 | 222.7 | 174.0 | 129.1 | 145.3 | 150.9 | 134.8 | 1993.7 |
| 2005 | 104.0 | 92.6 | 143.3 | 219.4 | 218.5 | 148.9 ) | 138.3 | 163.4 | 148.2 ) | 137.7 | 171.1 | 115.0 | 1800.4 |
| 2006 | 115.0 | 96.8 | 142.4 | 115.5 | 154.5 | 138.4 | 85.2 | 236.0 | 167.5 | 169.5 | 133.0 | 107.5 | 1661.3 |
| 2007 | 123.9 | 141.5 | 180.7 | 171.4 | 203.2 | 162.3 | 100.9 | 234.0 | 179.8 | 158.0 | 125.7 | 118.1 | 1899.5 |
| 2008 | 104.4 | 111.7 | 170.9 | 174.9 | 176.0 | 102.2 | 199.2 ) | 181.5 | 131.0 | 152.5 | 124.5 | 149.2 | 1778.0 |
| 2009 | 95.2 | 118.4 | 167.1 | 205.2 | 162.7 | 167.7 | 117.2 | 174.9 | 189.6 | 170.9 | 107.8 | 126.6 | 1803.3 |
| 2010 | 129.4 | 110.5 | 111.6 | 147.0 | 189.5 | 140.9 | 168.0 | 230.6 | 160.4 | 122.5 | 142.2 | 128.9 | 1781.5 |
| 2011 | 131.2 | 136.0 | 176.6 | 192.3 | 160.4 | 127.3 | 155.3 | 203.0 | 165.2 | 165.9 | 113.3 | 121.3 | 1847.8 |
| 2012 | 101.7 | 100.8 | 139.9 | 168.9 | 158.6 | 106.2 | 174.3 | 216.4 | 176.2 | 184.6 | 112.5 | 115.8 ) | 1755.9 |
| 2013 | 129.9 | 109.7 | 182.2 | 204.2 | 243.8 | 136.3 | 186.0 | 222.8 | 206.2 | 129.4 | 134.3 | 119.4 | 2004.2 |
| 2014 | 130.1 | 110.4 | 159.5 | 199.2 | 240.8 | 138.7 | 182.2 | 118.4 | 180.0 | 150.9 | 141.1 | 102.7 | 1854.0 |
| 2015 | 90.1 | 104.3 | 150.9 | 139.8 | 232.8 | 119.2 | 140.0 | 180.9 | 146.5 | 213.9 | 100.9 | 119.4 | 1738.7 |
| 2016 | 132.2 | 144.1 | 183.1 | 154.3 | 216.4 | 129.8 | 186.4 | 230.0 | 103.8 | 137.0 | 133.0 | 137.0 | 1887.1 |
| 2017 | 121.2 | 106.9 | 152.8 ) | 178.9 | 232.8 | 201.1 | 164.1 | 192.2 | 143.2 | 85.5 | 163.6 | 148.9 | 1891.2 |
| 2018 | 139.2 | 154.8 | 215.9 | 203.3 | 191.7 | 169.4 | 239.2 | 246.7 | 80.2 | 169.5 | 146.3 | 109.0 | 2065.2 |
| 2019 | 118.6 | 119.6 | 144.6 | 186.8 | 261.8 | 149.7 | 104.4 | 195.9 | 194.5 | 112.2 | 179.8 | 118.9 ) | 1886.8 |
| 2020 | 95.8 | 117.2 | 170.7 | 201.5 | 190.7 | 156.6 | 72.3 | 262.3 | 133.0 | 165.1 | 164.1 | 152.4 | 1881.7 |
| 2021 | 153.0 | 168.1 | 183.3 | 211.1 | 135.4 | 143.6 | 183.5 | 146.5 | 107.6 | 183.8 | 173.2 | 147.3 | 1936.4 |
| 2022 | 131.8 | 143.3 | 163.1 | 201.5 | 190.5 | 190.9 | 171.3 | 185.4 | 166.9 | 178.3 | 168.7 | 151.4 | 2043.1 |
| 2023 | 120.7 | 115.9 | 207.5 | 182.8 | 214.6 | 118.3 | 217.7 | 206.0 | 171.5 | 191.2 | 170.3 | 178.0 | 2094.5 |
| 2024 | 123.6 | 86.1 | 137.2 | 144.7 | 205.0 | 163.7 | 191.3 | 228.2 | 196.6 | 144.5 | 147.3 | 161.5 | 1929.7 |
| 2025 | 164.9 | 112.7 | 153.8 | 208.7 | 153.3 | 182.5 | 260.1 | 234.6 | 171.6 | 117.8 | 167.6 | 153.7 | 2081.3 |
| 2026 | 155.1 | 139.0 | 197.9 | 149.9 | 234.5 | 22.0 ] | 898.4 ] |
Remarks
The red lines, if any, indicate data inhomogeneity caused by changes in instrumentation, observation methods and/or site location.