Determine the normality of the change in temperature over the date period given in the data.

1948	-0.2
1949	-0.2
1950	-1.3
1951	-0.6
1952	0.8
1953	0.8
1954	0
1955	-0.2
1956	-0.8
1957	-0.3
1958	0.5
1959	-0.4
1960	0.4
1961	-0.2
1962	0
1963	0.2
1964	-0.6
1965	-0.6
1966	-0.3
1967	-0.4
1968	0.2
1969	0.4
1970	-0.2
1971	0
1972	-2
1973	0.6
1974	-0.8
1975	-0.1
1976	0
1977	1
1978	-0.5
1979	-0.02
1980	0.4
1981	2
1982	-1
1983	0.1
1984	0.2
1985	0
1986	0
1987	1.5
1988	0.8
1989	-0.2
1990	-0.1
1991	0.4
1992	-0.1
1993	0.4
1994	0.5
1995	0.6
1996	0
1997	0.6
1998	2.3
1999	1.7
2000	0.9
2001	1.8
2002	0.5
2003	1.1
2004	0
2005	1.6
2006	2.4
2007	0.8
2008	0.6
2009	0.8
2010	3
2011	1.4
2012	1.8
2013	0.7
2014	0.6
2015	1.3
2016	2.1
2017	1.5
2018	0.6
2019	1.1
2020	1.1