1953 04 - daily  - mean of NCEP mean Daily Downward Longwave Radiation Flux at surface, W/m^2.
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	215.9	223.2	226.3	226.8	226.3	217.5	213.6	215.7	219.7	223.0	220.0	215.8	215.4	215.1	214.1	217.1	219.7	220.7	225.4	231.7	234.5	233.9	233.4	232.9	236.7	239.2	240.3	238.8	234.2	233.7	-9999.0
34	Hudson Bay	242.4	240.2	229.8	234.0	241.1	240.3	242.7	252.2	249.2	240.4	245.0	230.4	226.2	227.8	219.5	212.4	215.7	221.0	224.3	238.6	257.8	254.9	243.8	250.9	253.1	252.9	258.2	258.8	249.3	254.4	-9999.0
36	Hudson Strait	286.7	278.6	261.8	281.1	268.4	248.9	256.7	247.8	229.6	235.1	257.8	259.9	258.1	264.2	255.7	233.7	192.8	200.7	219.7	224.0	253.1	273.4	256.0	286.1	272.1	275.3	265.8	240.3	230.7	221.9	-9999.0
98	Bering Strait	199.8	219.7	213.9	214.9	215.9	194.7	201.5	216.9	244.8	234.5	228.1	222.0	207.7	185.5	201.8	201.4	220.6	224.2	224.0	237.6	233.0	229.1	232.2	225.1	235.9	243.1	238.6	248.0	238.2	234.1	-9999.0
128	Arctic subocean	172.3	181.0	189.8	177.5	172.0	170.7	187.4	189.6	185.0	172.6	160.7	149.0	139.2	150.9	153.2	147.4	153.4	135.7	151.9	167.0	173.6	204.5	204.7	193.9	193.5	191.7	201.0	202.5	189.7	162.6	-9999.0
130	Chukchi Sea	162.5	188.8	197.0	192.0	161.7	152.9	210.8	265.0	274.0	248.2	230.9	200.4	190.3	154.2	163.8	167.8	191.0	203.3	234.9	259.5	231.6	214.2	213.7	215.9	223.1	227.3	233.5	215.4	218.2	252.2	-9999.0
132	Beaufort Sea	205.1	217.4	244.8	239.8	252.7	233.2	221.4	210.7	213.7	216.1	206.1	194.5	191.2	176.6	178.4	197.3	197.2	205.2	222.1	249.9	251.3	237.3	229.5	228.7	226.3	245.2	242.4	239.0	236.5	247.1	-9999.0
134	Arctic Archipelago	214.2	205.8	213.8	235.2	232.1	224.4	219.6	211.5	191.6	193.3	174.7	170.2	185.8	194.3	188.1	174.5	182.8	186.4	183.9	183.3	186.0	211.7	211.6	198.3	209.8	212.8	223.9	237.5	232.5	223.8	-9999.0
136	Foxe Basin	208.2	238.4	239.5	221.2	205.7	217.9	200.7	200.5	211.4	206.6	204.9	179.5	175.2	179.9	179.3	226.3	225.3	198.0	197.5	205.3	216.2	249.6	208.9	226.8	243.2	259.8	275.2	229.1	216.0	231.9	-9999.0
138	Baffin Bay	137.5	175.6	201.2	193.6	202.7	193.0	155.3	153.2	158.1	157.1	137.0	133.4	134.0	135.7	133.7	137.5	158.7	151.2	142.1	143.7	142.2	159.8	168.9	177.4	182.6	182.9	181.6	169.0	148.0	153.7	-9999.0
139	South Greenland	133.3	169.2	192.1	213.2	196.0	185.7	179.7	157.2	156.6	163.2	163.9	166.2	164.5	184.3	195.1	233.3	241.2	238.5	224.8	201.2	181.6	162.9	180.5	182.9	182.6	188.0	183.8	178.6	172.3	170.4	-9999.0
140	Greenland Sea	117.2	132.8	160.4	160.3	150.3	151.0	139.7	126.6	147.4	128.2	123.4	114.9	114.2	113.8	116.7	116.3	135.4	132.7	126.3	127.6	122.3	149.1	193.4	183.9	192.1	183.8	171.4	173.6	183.7	157.4	-9999.0
142	Norwegian Sea	213.2	253.5	273.4	253.1	267.4	270.2	251.1	244.9	243.6	234.1	274.0	281.7	273.0	245.7	237.9	230.4	238.7	247.1	236.1	272.1	293.5	244.1	269.5	279.6	268.2	273.4	264.4	270.8	297.5	279.3	-9999.0
144	Barents Sea	236.2	216.2	238.2	273.1	264.6	253.4	267.9	279.0	265.6	253.0	255.0	234.6	240.3	242.0	262.1	284.0	262.0	270.1	292.5	280.3	267.2	265.6	251.6	246.6	269.6	276.9	277.7	270.0	275.1	265.3	-9999.0
146	Kara Sea	239.0	244.8	236.8	231.5	238.0	221.3	213.6	222.3	231.3	243.2	235.6	231.4	230.0	232.3	232.5	233.3	238.2	235.5	238.8	244.4	245.7	248.7	259.4	257.3	252.5	248.2	252.7	245.9	235.8	234.7	-9999.0
148	Laptev Sea	209.6	225.0	230.3	215.9	211.6	218.6	203.7	197.0	199.2	209.8	218.7	232.4	235.8	234.2	223.8	220.9	221.2	222.4	236.8	239.3	246.0	235.4	223.5	221.6	229.9	239.2	234.8	238.1	248.3	246.6	-9999.0
150	East Siberian Sea	205.2	192.5	189.3	203.4	182.2	173.1	190.7	192.8	216.1	233.6	223.7	231.6	243.5	252.5	237.6	224.7	216.8	208.3	194.2	210.6	216.9	219.9	213.9	212.5	227.6	216.3	220.0	225.8	220.9	222.6	-9999.0
152	Gulf of Alaska	238.7	256.3	245.1	230.1	224.1	217.2	189.1	200.7	224.9	241.8	233.8	223.3	212.4	220.4	240.5	244.0	262.9	258.0	260.8	244.0	234.0	232.0	228.9	224.5	256.5	258.9	247.9	281.3	262.5	262.2	-9999.0
154	Southeast Bering Sea	259.4	243.5	248.5	234.3	193.4	188.7	239.0	254.0	230.3	231.4	233.7	231.1	219.1	184.5	179.7	251.8	239.9	271.0	254.9	240.2	239.8	241.3	236.2	239.3	240.8	247.9	255.0	278.9	270.9	263.3	-9999.0