Year,Value,ValueRank 1940,295.943,1 1941,288.33,19 1942,275.466,63 1943,281.033,51 1944,288.044,20 1945,291.876,4 1946,268.371,80 1947,283.789,42 1948,290.461,9 1949,277.0,61 1950,287.368,27 1951,291.575,7 1952,262.104,86 1953,280.641,52 1954,284.861,39 1955,271.526,72 1956,268.247,81 1957,286.886,31 1958,281.85,49 1959,287.866,23 1960,271.099,75 1961,281.113,50 1962,278.56,58 1963,273.581,69 1964,278.259,59 1965,282.704,47 1966,287.295,28 1967,285.386,36 1968,287.873,22 1969,290.312,10 1970,288.575,18 1971,283.106,45 1972,266.508,84 1973,275.099,65 1974,278.568,57 1975,280.108,53 1976,269.121,78 1977,288.819,17 1978,267.602,82 1979,273.152,71 1980,283.47,43 1981,274.184,68 1982,270.539,76 1983,282.471,48 1984,273.554,70 1985,286.184,33 1986,287.175,29 1987,289.904,13 1988,286.136,34 1989,275.451,64 1990,269.17,77 1991,283.252,44 1992,295.067,2 1993,288.865,15 1994,289.532,14 1995,284.446,41 1996,283.03,46 1997,294.003,3 1998,279.42,54 1999,290.291,11 2000,287.431,26 2001,271.344,73 2002,287.783,24 2003,286.072,35 2004,274.288,67 2005,284.494,40 2006,287.162,30 2007,286.385,32 2008,279.27,55 2009,287.781,25 2010,290.522,8 2011,268.974,79 2012,276.766,62 2013,278.611,56 2014,285.081,38 2015,291.631,6 2016,271.27,74 2017,277.64,60 2018,274.592,66 2019,267.357,83 2020,287.936,21 2021,288.852,16 2022,291.647,5 2023,285.135,37 2024,290.031,12 2025,262.285,85 Variable: Outgoing Longwave Domain: Point: W of Kauai [21.75N , 161.25W] Month(s): Jun Average of all values: 281.588 Normal Period: 1991 to 2020 Normal Value = 283.01 Watts per sq m Trend Begin Value = 281.406 Watts per sq m Trend End Value = 281.77 Watts per sq m Total Trend (Change) = 0.365 Watts per sq m Total Trend (Change) per Decade = 0.042 Watts per sq m Trend Statistical Sig. (M-K Test): No trend Trend P-value (M-K Test): 0.7259