September Mean Temperatures

wdt_ID	Year	No.Years	Actual Mean Temp	Cum.Mean Temp	Av.Mean Temp
1	1984	1	13.5	13.5	13.5
2	1985	2	14.0	27.4	13.7
3	1986	3	10.6	38.0	12.7
4	1987	4	13.6	51.6	12.9
5	1988	5	13.0	64.6	12.9
6	1989	6	14.6	79.1	13.2
7	1990	7	12.6	91.8	13.1
8	1991	8	14.2	106.0	13.3
9	1992	9	13.2	119.2	13.3
10	1993	10	11.8	131.0	13.1
11	1994	11	12.7	143.7	13.1
12	1995	12	13.2	156.9	13.1
13	1996	13	13.1	169.9	13.1
14	1997	14	14.2	184.2	13.2
15	1998	15	15.0	199.1	13.3
16	1999	16	15.5	214.6	13.4
17	2000	17	14.5	229.1	13.5
18	2001	18	13.4	242.5	13.5
19	2002	19	14.2	256.7	13.5
20	2003	20	14.0	270.6	13.5
21	2004	21	14.8	285.4	13.6
22	2005	22	15.4	300.8	13.7
23	2006	23	17.0	317.8	13.8
24	2007	24	13.9	331.7	13.8
25	2008	25	13.1	344.8	13.8
26	2009	26	14.1	358.8	13.8
27	2010	27	13.7	372.6	13.8
28	2011	28	15.0	387.6	13.8
29	2012	29	13.1	400.7	13.8
30	2013	30	13.8	414.5	13.8
31	2014	31	14.9	429.2	13.9
32	2015	32	12.2	441.4	13.8
33	2016	33	15.9	457.3	13.9
34	2017	34	13.3	470.6	13.8
35	2018	35	13.8	484.4	13.8
36	2019	36	14.2	498.6	13.9
37	2020	37	13.9	512.5	13.9
38	2021	38	16.2	528.7	13.9
39	2022	39	14.1	542.8	13.9
40	2023	40	17.0	559.8	14.0
41	2024	41	13.6	573.4	14.0
	Year	No.Years	Actual Mean Temp	Cum.Mean Temp	Av.Mean Temp