1991 04 - daily  - mean of ECMWF ERA-40 daily air temperature at 2m (k); A.P.Barrett, CU
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	264.0	263.6	263.5	264.2	264.9	265.0	264.7	264.9	265.4	265.4	264.8	265.0	266.4	266.6	265.5	265.3	266.7	267.8	268.4	268.5	268.5	268.6	269.0	269.5	270.1	270.4	269.9	269.9	270.3	270.9	-9999.0
34	Hudson Bay	268.9	271.3	272.7	272.1	272.4	272.8	271.6	270.6	270.4	271.0	271.0	271.2	273.7	273.5	271.8	270.2	269.5	268.7	269.7	272.7	274.5	273.7	272.6	272.5	274.2	275.3	274.7	275.1	275.7	275.0	-9999.0
36	Hudson Strait	261.7	260.0	259.9	265.2	258.7	254.4	255.0	259.4	258.8	259.1	258.7	258.5	261.8	263.9	256.8	254.9	256.8	259.3	262.3	260.5	261.2	267.7	271.9	272.6	266.7	265.1	265.0	265.7	267.2	270.2	-9999.0
98	Bering Strait	263.0	263.5	264.5	264.3	263.6	263.1	263.7	265.5	265.8	266.4	267.2	267.6	266.8	268.5	270.3	271.1	272.7	272.5	272.9	272.8	272.4	272.9	271.3	271.8	272.2	272.3	272.8	271.9	272.9	274.5	-9999.0
128	Arctic subocean	243.3	242.4	243.0	240.7	240.5	242.2	242.0	243.0	243.2	242.3	240.7	240.9	241.6	243.5	247.1	246.3	247.4	247.9	248.1	248.6	248.8	250.4	253.1	254.2	255.2	256.2	257.9	259.3	257.8	256.7	-9999.0
130	Chukchi Sea	257.9	258.0	258.0	257.3	255.3	253.2	254.8	255.2	255.1	258.5	263.4	265.8	262.8	263.4	264.9	267.4	269.1	269.0	268.8	269.4	268.4	267.8	266.3	266.4	266.5	266.0	266.9	267.7	268.3	269.2	-9999.0
132	Beaufort Sea	269.6	266.9	266.3	267.7	267.7	267.9	267.7	268.6	269.3	269.3	269.9	272.3	274.1	273.0	271.4	271.2	271.7	273.7	275.1	274.5	273.5	274.4	273.6	272.4	271.3	270.8	271.6	272.5	272.9	273.6	-9999.0
134	Arctic Archipelago	251.9	251.9	248.8	247.8	251.3	254.3	254.6	254.8	254.3	253.5	251.6	252.8	252.5	251.3	252.3	252.1	253.8	256.0	258.5	261.0	259.1	257.6	256.3	257.9	259.8	261.1	262.4	263.1	262.9	262.0	-9999.0
136	Foxe Basin	254.1	253.3	253.1	251.9	248.8	250.0	253.4	254.3	256.1	253.5	252.7	250.8	247.5	247.5	248.6	252.2	255.0	257.5	257.6	257.4	258.3	258.5	261.5	261.5	260.1	260.8	262.5	262.6	263.9	264.6	-9999.0
138	Baffin Bay	240.9	241.5	241.8	240.6	239.7	239.7	240.5	239.7	240.1	239.7	240.2	239.9	241.5	241.8	243.6	247.4	249.2	250.5	251.9	250.0	249.1	247.8	248.6	249.7	250.2	251.4	251.9	252.7	252.5	253.2	-9999.0
139	South Greenland	256.0	251.3	248.1	247.9	247.7	248.0	248.0	247.9	247.2	247.2	247.3	248.3	251.5	251.7	254.2	261.0	261.7	262.9	261.5	259.2	257.6	255.0	253.4	253.1	254.4	254.1	254.4	256.1	256.8	259.0	-9999.0
140	Greenland Sea	239.7	238.6	239.2	237.9	237.0	238.5	239.8	238.6	237.6	242.1	244.7	242.7	243.0	243.3	244.7	247.5	249.1	249.0	249.2	248.3	246.4	245.5	248.5	249.1	248.7	248.8	248.6	250.2	251.5	252.4	-9999.0
142	Norwegian Sea	269.6	272.1	275.0	275.5	275.9	278.0	277.1	277.3	276.3	278.1	279.9	280.8	276.2	274.6	274.5	272.6	268.3	267.0	267.5	268.3	270.2	272.5	274.2	274.5	276.3	276.6	276.6	276.3	277.2	277.5	-9999.0
144	Barents Sea	267.3	265.1	270.7	275.5	275.3	275.2	277.4	277.5	276.5	276.5	276.9	278.5	278.1	274.4	270.6	269.6	270.1	267.6	267.5	270.7	275.3	272.4	271.6	272.9	272.5	272.9	275.0	275.1	273.6	273.2	-9999.0
146	Kara Sea	268.7	268.9	267.7	268.5	270.2	270.3	270.0	270.8	271.3	271.5	270.9	271.0	272.8	271.9	269.0	269.6	274.2	276.0	276.1	273.9	272.9	274.8	275.6	275.7	276.8	276.6	274.2	274.7	276.0	275.6	-9999.0
148	Laptev Sea	265.0	264.1	264.5	265.6	266.9	265.9	263.9	264.4	267.0	264.5	261.6	261.2	262.4	264.6	264.6	259.8	259.4	262.8	263.2	265.2	265.5	264.9	268.5	270.2	270.3	271.4	269.7	266.3	266.1	269.0	-9999.0
150	East Siberian Sea	258.5	257.0	256.4	257.7	259.3	261.7	261.0	257.6	259.3	262.4	258.0	254.0	257.2	261.9	262.8	264.5	263.4	262.0	262.6	262.0	262.8	263.4	261.8	262.2	264.3	266.2	267.0	268.7	267.6	268.3	-9999.0
152	Gulf of Alaska	267.4	268.8	270.4	271.1	271.3	270.8	271.2	271.2	270.2	271.3	270.9	272.1	272.5	274.4	273.7	273.6	274.3	274.3	274.8	274.3	274.3	274.4	273.7	275.6	275.8	274.7	274.5	273.9	275.1	276.2	-9999.0
154	Southeast Bering Sea	270.4	272.5	272.6	272.2	270.5	268.9	270.2	271.0	270.5	267.8	268.4	269.4	271.1	274.9	274.1	274.6	273.4	274.4	276.0	275.3	275.8	275.9	275.0	275.2	276.8	277.0	276.9	276.2	277.4	277.6	-9999.0