1957 04 - daily  - mean of NCEP mean Daily Air temperature at 2 m, degK.
BasinID	Name	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
0	Pan Arctic	261.8	261.8	261.3	260.8	261.3	261.6	261.2	261.3	262.1	262.2	262.3	263.1	263.9	263.9	264.5	264.5	264.0	264.4	264.5	264.5	264.6	265.5	265.8	266.0	266.3	266.3	266.6	267.1	267.6	268.2	-9999.0
34	Hudson Bay	262.0	259.8	263.4	266.7	266.3	264.9	263.0	263.1	263.0	262.5	263.1	264.9	266.6	266.4	268.3	269.8	268.9	270.2	272.4	272.3	271.1	273.3	275.0	274.4	274.1	273.9	273.1	273.7	275.7	276.6	-9999.0
36	Hudson Strait	257.6	258.0	256.0	257.8	259.4	261.4	264.7	266.8	267.7	269.8	271.5	265.4	259.5	257.4	258.2	260.0	260.6	264.0	265.4	268.5	264.5	258.8	256.0	259.1	266.2	271.8	275.3	269.6	264.8	262.0	-9999.0
98	Bering Strait	262.8	263.9	263.1	262.4	264.6	268.4	266.0	265.7	264.8	266.1	267.4	270.0	267.1	264.3	264.5	264.6	265.8	266.7	267.6	267.3	267.6	267.9	266.1	267.2	268.3	267.7	266.7	265.9	264.7	264.8	-9999.0
128	Arctic subocean	240.8	242.4	242.7	246.8	247.1	242.9	239.8	240.8	240.2	238.2	238.4	240.0	244.1	245.3	245.3	246.7	247.9	247.0	247.9	251.7	251.0	247.7	249.5	248.7	248.5	250.4	252.6	250.9	249.3	248.4	-9999.0
130	Chukchi Sea	255.4	256.4	253.9	257.3	265.3	269.7	268.6	270.2	266.2	269.3	272.0	271.7	268.1	264.5	262.3	265.4	268.8	270.4	269.9	267.9	267.7	264.7	264.5	264.9	264.5	263.0	261.9	260.8	261.2	260.9	-9999.0
132	Beaufort Sea	261.7	264.7	264.5	262.4	262.3	262.7	263.0	261.0	260.6	258.6	259.4	261.7	265.0	266.2	267.8	268.7	268.9	267.5	266.2	264.5	265.9	268.0	265.9	265.6	266.7	268.7	269.6	270.5	269.5	268.8	-9999.0
134	Arctic Archipelago	249.7	253.3	254.3	251.6	250.1	251.0	250.0	248.9	251.5	252.2	251.9	253.9	256.4	258.4	262.2	262.9	260.8	259.4	254.9	252.3	251.8	253.6	254.7	253.9	252.9	255.9	260.0	260.7	257.9	256.0	-9999.0
136	Foxe Basin	250.6	250.5	252.3	255.2	254.9	257.7	259.8	261.3	259.9	261.9	259.2	255.3	256.3	256.4	257.4	259.1	260.1	258.4	257.6	259.6	256.0	253.9	254.4	257.7	256.1	254.6	254.4	257.3	258.7	260.3	-9999.0
138	Baffin Bay	252.3	251.2	248.3	247.3	247.5	250.6	250.6	248.0	249.5	245.5	241.4	241.0	243.4	245.8	245.0	246.6	244.4	246.5	249.0	248.9	248.5	250.6	253.7	255.6	255.9	250.4	247.7	244.7	244.7	245.0	-9999.0
139	South Greenland	261.9	258.9	256.6	256.3	260.7	265.6	264.5	261.5	262.2	262.8	261.9	261.5	260.5	257.8	258.9	256.3	254.6	255.6	255.7	254.5	255.6	256.5	259.1	262.0	261.8	257.1	258.6	259.0	262.7	263.9	-9999.0
140	Greenland Sea	249.6	253.7	249.1	247.1	247.1	248.2	249.0	248.0	246.7	243.4	239.3	240.8	245.5	248.3	250.4	251.9	250.6	250.6	249.6	249.0	248.6	250.0	253.1	255.0	258.8	253.8	250.6	248.8	247.3	247.4	-9999.0
142	Norwegian Sea	273.5	274.3	275.2	276.4	276.2	272.4	272.6	270.7	271.6	269.6	269.2	269.1	269.0	267.8	270.6	272.7	275.0	275.9	274.7	275.0	275.8	276.4	276.2	276.4	274.9	275.7	276.8	275.5	274.3	271.4	-9999.0
144	Barents Sea	264.7	260.6	260.2	265.1	268.6	269.2	268.2	263.5	264.2	267.8	267.2	266.7	265.9	264.8	264.3	267.2	269.3	268.2	271.0	273.4	274.1	273.5	272.9	271.9	273.4	273.1	274.4	276.0	276.0	277.5	-9999.0
146	Kara Sea	265.6	266.0	263.9	261.3	261.1	262.4	263.3	266.3	268.1	268.0	268.4	269.0	269.5	268.9	268.2	265.7	265.2	266.8	267.2	267.3	267.8	268.6	269.0	268.6	268.0	268.1	268.7	269.7	271.0	272.2	-9999.0
148	Laptev Sea	261.5	262.3	262.7	261.7	261.3	258.6	258.0	256.9	258.1	258.7	259.0	259.3	261.0	263.3	264.7	265.5	263.6	262.2	260.1	259.8	260.3	261.4	261.6	262.2	263.3	264.5	264.3	264.8	265.8	267.0	-9999.0
150	East Siberian Sea	262.6	260.5	259.4	258.9	258.5	255.9	254.7	256.1	258.5	258.5	259.3	261.2	260.2	259.8	258.3	258.2	258.4	259.2	260.7	262.8	262.4	263.2	264.0	263.5	262.3	261.9	262.4	265.5	266.3	265.9	-9999.0
152	Gulf of Alaska	270.6	271.3	269.8	268.3	268.6	271.4	269.3	269.1	267.5	268.9	268.1	270.2	269.8	269.9	269.0	269.7	269.3	269.0	268.0	269.7	272.0	272.2	270.6	272.5	272.8	272.5	271.4	270.7	269.5	269.2	-9999.0
154	Southeast Bering Sea	271.4	269.2	264.6	264.8	272.0	272.3	268.4	271.2	270.0	271.5	273.7	274.7	272.7	268.8	268.1	272.4	273.1	273.0	271.9	273.1	273.0	271.3	272.5	273.6	272.3	272.1	272.7	271.8	270.7	270.7	-9999.0