Year,Value,WFO Anchorage,SLP,Mar-May,(hPa)
1940,1008.984
1941,1006.792
1942,1009.024
1943,1013.361
1944,1013.852
1945,1012.89
1946,1007.513
1947,1009.888
1948,1016.95
1949,1009.168
1950,1006.771
1951,1011.178
1952,1007.885
1953,1007.502
1954,1014.374
1955,1007.79
1956,1007.562
1957,1009.061
1958,1010.852
1959,1009.769
1960,1008.543
1961,1009.157
1962,1010.945
1963,1011.878
1964,1012.135
1965,1012.571
1966,1011.323
1967,1018.633
1968,1009.563
1969,1007.638
1970,1006.997
1971,1005.955
1972,1011.489
1973,1006.387
1974,1007.789
1975,1009.985
1976,1006.499
1977,1007.483
1978,1008.267
1979,1009.94
1980,1003.564
1981,1007.9
1982,1010.531
1983,1007.3
1984,1007.414
1985,1007.112
1986,1009.288
1987,1006.381
1988,1004.836
1989,1013.985
1990,1011.429
1991,1006.589
1992,1012.028
1993,1006.529
1994,1005.851
1995,1010.828
1996,1013.34
1997,1012.145
1998,1005.589
1999,1007.763
2000,1007.578
2001,1007.234
2002,1018.548
2003,1010.565
2004,1010.644
2005,1008.169
2006,1009.529
2007,1008.869
2008,1010.795
2009,1013.498
2010,1005.146
2011,1008.701
2012,1006.809
2013,1016.23
2014,1010.583
2015,1009.219
2016,1006.879
2017,1011.045
2018,1010.244
2019,1008.883
2020,1014.851
2021,1013.01
2022,1009.858
2023,1011.216
2024,1008.973
2025,1005.345