1964 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	187.7	187.3	185.5	192.4	195.0	202.1	196.9	194.3	191.4	190.1	194.9	197.0	198.3	200.4	197.6	196.0	197.6	200.0	206.7	211.4	212.3	213.2	221.7	222.5	224.7	226.4	227.9	229.6	224.4	231.3	-9999.0
34	Hudson Bay	201.5	213.1	209.3	224.9	230.6	234.3	209.1	201.7	206.1	206.3	232.8	243.4	235.1	241.2	233.1	232.0	222.1	199.4	214.8	236.0	229.3	233.9	248.3	251.7	257.8	270.5	274.9	272.5	259.5	271.3	-9999.0
36	Hudson Strait	185.0	154.9	166.2	193.8	180.6	206.4	195.7	157.1	186.7	166.4	170.3	192.4	168.9	236.7	258.1	205.4	182.9	237.7	146.3	167.5	210.3	211.9	222.0	214.6	227.8	241.9	221.1	229.8	232.3	225.4	-9999.0
98	Bering Strait	189.9	185.5	193.7	189.3	216.3	235.1	214.0	224.8	225.7	204.8	194.9	198.1	203.0	195.5	195.2	211.8	233.4	226.6	211.2	209.0	212.3	218.2	220.8	219.4	203.6	197.4	188.7	195.7	205.3	202.4	-9999.0
128	Arctic subocean	128.9	122.1	130.4	149.4	135.6	113.0	107.2	109.7	126.6	114.7	105.2	117.0	123.7	131.5	129.8	122.3	120.2	125.4	145.5	160.7	136.5	144.3	148.9	164.9	163.7	164.5	157.8	136.0	142.6	182.1	-9999.0
130	Chukchi Sea	157.7	131.7	132.2	189.5	215.7	219.8	207.6	205.4	195.6	157.5	156.8	146.3	145.5	162.4	222.2	236.6	238.7	223.3	195.6	184.3	173.6	184.4	181.0	173.4	169.8	167.8	162.3	160.3	200.3	200.7	-9999.0
132	Beaufort Sea	229.8	215.4	211.6	233.6	190.4	197.9	207.8	203.2	194.5	212.0	201.1	193.8	193.0	199.6	190.8	181.3	186.6	211.1	225.1	209.0	227.8	224.9	232.7	224.9	236.8	223.5	211.8	217.8	218.2	231.5	-9999.0
134	Arctic Archipelago	155.6	192.5	210.9	199.6	176.6	145.5	147.9	138.1	131.5	122.3	130.4	140.1	151.6	153.9	148.9	150.3	147.0	153.0	154.3	152.5	161.4	167.0	186.7	207.9	227.5	236.2	215.7	211.1	224.7	211.3	-9999.0
136	Foxe Basin	138.6	151.5	150.1	178.9	189.9	161.2	148.5	152.1	144.7	153.9	155.2	146.7	163.5	153.4	167.6	158.1	151.6	186.5	155.0	176.1	180.8	210.1	199.6	173.3	199.5	198.3	227.6	232.2	248.9	211.0	-9999.0
138	Baffin Bay	133.4	134.8	134.3	138.6	135.6	138.7	126.0	115.3	103.2	109.0	129.3	135.9	139.4	130.9	113.2	104.3	129.4	128.7	173.1	177.1	158.5	136.1	161.4	157.2	138.2	135.1	158.8	157.5	151.9	199.4	-9999.0
139	South Greenland	185.4	183.5	167.7	160.6	172.8	180.4	155.0	141.9	140.2	144.9	157.5	159.9	167.9	152.1	140.0	156.2	165.3	161.3	183.5	207.2	203.9	183.0	182.3	178.8	180.1	184.1	172.8	178.4	172.4	175.7	-9999.0
140	Greenland Sea	135.2	144.7	136.4	130.0	119.9	130.6	142.3	146.5	122.7	135.2	126.5	122.8	126.8	149.2	148.0	125.7	117.0	132.5	141.0	181.5	177.6	141.5	147.4	158.8	143.5	137.6	127.0	122.9	121.8	139.9	-9999.0
142	Norwegian Sea	233.2	242.0	240.0	239.8	252.3	253.0	230.5	232.4	250.6	266.5	254.2	260.3	250.8	246.4	253.0	260.1	277.4	279.7	287.2	279.8	247.6	238.2	255.1	223.9	242.2	246.6	278.4	280.3	288.6	287.4	-9999.0
144	Barents Sea	215.5	236.4	238.3	235.6	226.3	219.3	223.0	216.9	200.4	206.5	223.8	229.2	252.2	257.7	247.6	253.1	251.3	248.0	242.0	237.9	236.4	250.0	256.1	234.8	238.3	237.7	215.3	214.6	241.0	265.8	-9999.0
146	Kara Sea	179.6	171.2	172.0	184.6	203.0	221.5	215.1	206.1	199.4	201.7	196.9	192.3	195.0	200.4	202.1	203.6	201.2	215.0	233.4	235.1	230.0	230.7	239.5	250.8	256.3	252.2	255.3	249.1	234.6	232.2	-9999.0
148	Laptev Sea	192.0	193.2	182.9	175.4	169.1	172.1	181.3	198.3	201.2	190.9	196.2	202.0	198.6	186.3	183.8	185.4	196.8	187.5	184.7	189.2	199.5	198.5	207.3	197.7	198.6	213.6	234.3	246.5	237.3	253.6	-9999.0
150	East Siberian Sea	177.9	166.1	158.0	157.9	170.6	192.7	197.1	196.7	200.2	194.6	218.4	223.6	223.9	239.8	227.7	185.5	172.5	179.1	180.8	171.3	177.8	183.0	189.7	197.3	189.8	183.9	200.6	222.7	201.1	202.0	-9999.0
152	Gulf of Alaska	216.4	229.5	242.6	209.1	246.1	255.0	247.6	255.4	255.4	241.3	227.7	224.5	236.3	220.3	199.2	216.0	267.2	251.4	223.7	232.0	228.4	251.1	255.9	257.3	219.9	216.9	226.4	220.1	203.8	203.5	-9999.0
154	Southeast Bering Sea	198.7	175.7	164.6	245.3	269.2	226.3	237.1	265.7	261.9	230.9	231.5	231.4	210.2	171.3	225.7	266.7	274.0	243.5	238.3	260.0	230.3	290.9	251.2	233.5	203.2	216.4	194.3	196.5	215.7	232.5	-9999.0