Среднемесячные многолетние данные по температуре воздуха во Владивостоке

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Пример данных (100 записей)

m4404	m4405	p0001_03
1950	1	-12.3
1950	2	-10.0
1950	3	-3.0
1950	4	4.0
1950	5	9.7
1950	6	15.2
1950	7	20.0
1950	8	22.8
1950	9	16.3
1950	10	8.8
1950	11	-2.9
1950	12	-12.1
1951	1	-16.2
1951	2	-10.4
1951	3	-3.9
1951	4	4.3
1951	5	10.4
1951	6	13.3
1951	7	17.6
1951	8	22.2
1951	9	14.8
1951	10	8.8
1951	11	-0.4
1951	12	-5.6
1952	1	-11.9
1952	2	-13.6
1952	3	-2.1
1952	4	4.7
1952	5	11.3
1952	6	13.7
1952	7	17.6
1952	8	20.8
1952	9	16.0
1952	10	9.2
1952	11	-3.0
1952	12	-12.6
1953	1	-15.8
1953	2	-9.9
1953	3	-1.5
1953	4	4.6
1953	5	7.7
1953	6	13.2
1953	7	17.1
1953	8	19.9
1953	9	15.9
1953	10	9.7
1953	11	-3.8
1953	12	-7.6
1954	1	-13.0
1954	2	-9.0
1954	3	-3.6
1954	4	4.9
1954	5	9.8
1954	6	10.9
1954	7	15.1
1954	8	18.2
1954	9	16.4
1954	10	8.1
1954	11	0.4
1954	12	-11.6
1955	1	-12.7
1955	2	-12.5
1955	3	-5.2
1955	4	4.3
1955	5	7.8
1955	6	13.1
1955	7	19.6
1955	8	21.9
1955	9	16.2
1955	10	8.9
1955	11	0.6
1955	12	-4.9
1956	1	-13.8
1956	2	-12.5
1956	3	-3.9
1956	4	4.8
1956	5	10.3
1956	6	12.3
1956	7	14.5
1956	8	19.0
1956	9	17.0
1956	10	9.6
1956	11	-4.0
1956	12	-14.0
1957	1	-11.5
1957	2	-12.9
1957	3	-5.7
1957	4	4.7
1957	5	9.8
1957	6	12.7
1957	7	16.5
1957	8	18.4
1957	9	14.8
1957	10	8.9
1957	11	1.9
1957	12	-7.8
1958	1	-13.6
1958	2	-9.2
1958	3	-3.6
1958	4	4.1