1953 04 - daily  - mean of NCEP mean Daily Clear Sky Downward Longwave 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	187.1	191.3	193.9	193.4	191.9	187.1	182.9	184.2	189.0	191.8	190.6	189.4	188.2	187.9	187.8	190.8	195.0	198.7	202.9	206.8	207.5	206.8	206.7	206.4	207.9	210.9	212.1	211.0	208.9	207.4	-9999.0
34	Hudson Bay	213.0	211.4	208.3	210.3	214.9	213.3	213.1	215.3	214.0	206.0	201.7	193.6	189.7	190.1	182.4	179.1	183.8	192.2	201.4	213.1	220.1	219.8	217.8	217.6	216.8	218.5	222.2	224.3	227.1	227.2	-9999.0
36	Hudson Strait	226.3	232.4	230.4	233.6	233.8	228.9	231.6	225.4	216.4	213.5	220.2	222.2	218.4	215.0	204.5	196.8	180.9	183.8	190.3	194.9	208.7	217.5	216.2	223.7	218.3	219.4	221.4	215.9	213.3	208.2	-9999.0
98	Bering Strait	169.2	182.5	184.1	182.7	180.8	168.7	170.9	186.6	204.9	209.4	203.8	196.9	173.8	159.1	170.7	180.8	194.8	202.5	206.3	203.1	199.2	197.9	199.2	200.2	201.1	207.7	206.7	212.1	211.1	215.2	-9999.0
128	Arctic subocean	142.7	148.2	154.7	150.7	151.4	150.0	154.9	157.5	150.4	141.6	132.0	119.0	116.1	121.3	124.8	121.0	131.9	129.9	137.2	145.3	149.5	169.7	177.4	177.6	181.0	179.4	183.1	173.9	158.6	144.8	-9999.0
130	Chukchi Sea	147.4	165.0	167.4	162.8	148.0	145.4	175.5	212.3	223.7	218.5	212.7	190.6	168.3	149.6	154.8	159.8	176.5	186.8	204.3	210.4	196.2	191.8	194.9	195.4	196.8	197.0	199.9	198.9	202.7	217.6	-9999.0
132	Beaufort Sea	184.6	194.8	211.1	210.5	211.3	200.3	187.3	186.0	186.8	179.9	163.8	157.6	151.8	147.8	158.9	177.4	186.2	195.0	208.2	220.4	217.9	207.4	202.8	205.5	208.6	219.6	223.8	217.9	217.8	220.7	-9999.0
134	Arctic Archipelago	175.6	177.0	188.4	205.8	206.4	202.6	195.2	188.7	173.0	162.7	152.1	150.7	155.1	159.7	162.7	161.0	166.4	171.9	168.9	169.5	172.5	181.5	185.9	187.2	196.0	200.9	206.4	211.9	213.8	204.3	-9999.0
136	Foxe Basin	172.9	198.7	205.5	199.0	193.9	202.4	194.4	190.5	194.4	184.1	178.3	171.8	168.0	166.2	165.3	184.7	186.4	178.8	178.3	178.7	183.6	200.2	193.5	206.7	217.0	219.7	226.8	213.5	205.8	215.2	-9999.0
138	Baffin Bay	127.3	142.6	157.9	155.4	161.5	158.3	143.1	140.2	139.3	133.1	121.0	116.0	117.2	119.1	121.0	125.3	140.9	140.9	135.4	135.5	133.1	142.4	161.1	170.0	172.9	173.1	169.9	160.8	143.0	139.7	-9999.0
139	South Greenland	124.1	146.6	163.4	178.4	174.3	167.5	156.5	141.5	136.6	141.1	142.5	142.1	147.8	162.1	171.6	190.8	201.2	200.0	188.9	174.0	162.4	152.1	161.9	165.9	167.2	172.6	171.1	167.9	163.9	162.0	-9999.0
140	Greenland Sea	107.1	122.1	138.7	140.0	132.5	135.1	120.0	114.0	125.5	117.9	114.5	106.2	105.7	103.5	105.5	107.8	120.4	119.8	118.2	119.4	115.1	131.7	159.4	163.2	168.4	166.7	160.9	158.9	153.7	145.6	-9999.0
142	Norwegian Sea	186.5	211.9	230.2	223.8	222.9	222.1	214.8	208.8	206.4	203.6	219.4	232.2	231.8	219.3	213.6	213.6	210.5	207.9	202.9	224.7	236.2	222.2	233.3	237.7	234.2	234.6	230.2	233.9	249.2	250.1	-9999.0
144	Barents Sea	204.7	190.6	199.0	227.0	226.5	221.0	224.8	227.5	222.9	218.4	216.3	207.1	217.2	230.7	234.0	237.2	231.5	239.2	250.2	241.8	236.0	238.7	229.3	222.5	240.3	249.5	250.3	243.2	245.1	239.0	-9999.0
146	Kara Sea	211.5	212.3	204.8	199.0	199.9	188.8	181.5	188.0	200.2	211.0	212.3	212.6	212.6	214.1	215.5	216.1	219.2	221.6	224.1	228.9	229.0	228.0	231.3	227.8	222.7	221.8	224.7	221.6	212.9	209.4	-9999.0
148	Laptev Sea	176.8	183.9	189.4	176.0	170.2	172.6	165.8	160.7	166.5	177.2	188.5	199.9	203.3	200.1	190.4	189.2	192.6	195.0	202.3	206.5	211.8	205.3	194.4	194.4	199.9	202.9	198.0	200.6	206.6	204.9	-9999.0
150	East Siberian Sea	163.0	153.3	153.3	156.3	144.0	151.5	166.0	164.2	179.4	192.7	190.8	199.2	200.8	199.5	194.0	183.0	174.4	167.5	165.3	177.2	179.2	188.4	185.9	182.4	185.2	187.6	190.6	190.3	186.4	191.8	-9999.0
152	Gulf of Alaska	197.2	212.4	209.7	201.8	196.0	188.5	180.7	188.0	201.4	220.2	216.6	207.5	195.1	187.2	199.0	212.9	222.2	227.1	225.3	214.7	209.4	207.4	205.6	205.2	211.9	223.7	221.2	233.1	227.1	230.5	-9999.0
154	Southeast Bering Sea	207.5	211.1	212.4	203.1	177.1	176.6	198.6	218.5	215.8	218.0	225.9	223.5	211.6	177.8	161.5	211.3	220.2	230.6	228.8	221.0	217.4	216.5	211.0	210.4	213.0	221.6	226.1	229.2	235.0	233.5	-9999.0