Question: A line graph using the Mauna Loa monthly mean data for 2019 is provided in Excel (data source: National Oceanic and Atmospheric Administration). Y-axis: 405
A line graph using the Mauna Loa monthly mean data for 2019 is provided in Excel (data source: National Oceanic and Atmospheric Administration).
Y-axis: 405 to 416 and X-AXIS: JANUARY TO DECEMBER
Following is the data provided.
| Year | CO2 (ppm) |
| 1959 | 316 |
| 1960 | 317 |
| 1961 | 318 |
| 1962 | 318 |
| 1963 | 319 |
| 1964 | 320 |
| 1965 | 320 |
| 1966 | 321 |
| 1967 | 322 |
| 1968 | 323 |
| 1969 | 325 |
| 1970 | 326 |
| 1971 | 326 |
| 1972 | 327 |
| 1973 | 330 |
| 1974 | 330 |
| 1975 | 331 |
| 1976 | 332 |
| 1977 | 334 |
| 1978 | 335 |
| 1979 | 337 |
| 1980 | 339 |
| 1981 | 340 |
| 1982 | 341 |
| 1983 | 343 |
| 1984 | 345 |
| 1985 | 346 |
| 1986 | 347 |
| 1987 | 349 |
| 1988 | 352 |
| 1989 | 353 |
| 1990 | 354 |
| 1991 | 356 |
| 1992 | 356 |
| 1993 | 357 |
| 1994 | 359 |
| 1995 | 361 |
| 1996 | 363 |
| 1997 | 364 |
| 1998 | 367 |
| 1999 | 368 |
| 2000 | 370 |
| 2001 | 371 |
| 2002 | 373 |
| 2003 | 376 |
| 2004 | 378 |
| 2005 | 380 |
| 2006 | 382 |
| 2007 | 384 |
| 2008 | 386 |
| 2009 | 387 |
| 2010 | 390 |
| 2011 | 392 |
| 2012 | 394 |
| 2013 | 397 |
| 2014 | 399 |
| 2015 | 401 |
| 2016 | 404 |
| 2017 | 407 |
| 2018 | 409 |
| 2019 | 411 |
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