1975 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	176.2	178.5	177.0	175.2	172.9	173.9	177.4	183.2	188.0	190.7	192.4	193.8	194.7	195.7	197.3	199.5	201.0	201.2	200.1	195.8	193.4	193.5	193.1	192.5	194.1	197.3	200.9	205.0	206.9	210.7	-9999.0
34	Hudson Bay	156.6	160.0	162.7	166.2	171.4	185.0	196.0	200.4	200.9	200.6	203.4	212.9	216.5	218.6	215.4	213.0	214.2	213.6	211.6	201.8	206.2	217.5	225.4	227.4	228.4	234.6	243.2	242.0	229.8	233.1	-9999.0
36	Hudson Strait	173.1	174.5	170.1	168.3	171.8	178.5	174.4	175.2	170.5	174.3	181.6	183.2	184.2	179.9	172.5	187.2	162.2	159.3	172.8	183.9	168.4	167.6	169.3	169.1	180.4	184.4	178.6	199.3	220.8	216.5	-9999.0
98	Bering Strait	167.2	166.0	165.4	173.6	181.3	183.8	180.7	182.1	189.2	193.0	186.1	175.1	179.5	191.7	197.5	191.0	194.1	186.7	177.6	177.8	180.6	178.0	179.3	178.0	186.4	187.5	181.2	181.1	187.4	197.5	-9999.0
128	Arctic subocean	116.4	124.5	131.7	129.1	128.0	123.8	131.5	137.2	133.9	131.3	132.5	123.5	125.4	130.8	130.0	131.8	129.9	129.3	133.9	136.6	135.3	129.6	133.4	123.6	130.5	145.5	147.5	164.9	170.6	170.9	-9999.0
130	Chukchi Sea	149.0	146.4	160.5	185.5	192.3	176.1	161.9	155.4	147.3	145.5	147.3	147.9	167.2	183.3	162.1	162.6	155.4	159.8	166.4	188.2	193.6	180.8	167.7	165.6	173.1	178.4	176.6	174.0	180.0	185.6	-9999.0
132	Beaufort Sea	159.0	166.4	164.3	161.3	165.3	177.1	191.1	196.3	206.6	215.2	214.4	214.1	205.6	200.0	206.0	211.0	209.5	215.4	212.1	201.5	194.4	196.0	209.4	212.8	212.3	223.1	226.8	218.4	212.5	218.3	-9999.0
134	Arctic Archipelago	134.7	143.1	141.9	142.5	145.6	153.2	171.0	181.1	186.2	189.5	189.1	180.0	170.3	158.5	155.6	160.4	161.3	174.5	177.1	168.5	155.0	156.1	171.9	192.0	195.1	188.6	209.0	217.4	216.2	206.5	-9999.0
136	Foxe Basin	139.3	142.9	149.7	145.2	142.6	142.4	147.1	161.0	174.1	182.8	176.2	168.9	157.3	147.7	140.3	138.0	134.7	137.7	140.0	147.0	147.3	144.7	149.9	172.3	181.3	189.1	200.3	221.1	221.1	208.1	-9999.0
138	Baffin Bay	118.3	136.8	138.2	135.2	127.0	115.0	102.9	105.4	107.9	105.1	106.0	114.0	112.8	107.1	106.8	107.7	111.1	127.5	140.4	147.1	139.7	129.5	115.6	112.6	130.1	147.6	144.6	158.4	161.8	168.3	-9999.0
139	South Greenland	178.8	198.8	197.6	193.7	165.0	142.4	137.5	148.4	146.3	131.2	146.4	155.0	151.5	151.4	152.5	158.5	170.2	171.1	166.9	162.0	165.6	171.2	158.0	153.2	154.8	153.6	149.1	158.4	155.1	148.6	-9999.0
140	Greenland Sea	129.9	156.7	157.1	142.4	122.6	109.1	105.4	109.8	109.9	113.3	119.5	119.5	118.4	117.2	114.7	110.6	120.2	129.8	148.1	152.0	157.1	155.2	158.1	131.8	125.2	141.0	130.3	131.9	140.0	143.2	-9999.0
142	Norwegian Sea	204.6	204.9	204.5	208.3	210.2	209.7	211.1	210.7	208.4	203.9	207.2	206.0	204.2	203.0	207.1	207.7	211.5	214.0	222.0	222.9	228.7	233.2	232.4	231.9	232.9	232.2	225.4	224.2	230.1	235.5	-9999.0
144	Barents Sea	216.9	222.2	212.6	214.0	222.0	210.2	217.3	226.8	225.5	231.1	218.7	223.5	249.5	231.9	215.8	220.7	221.7	216.2	212.4	208.8	222.1	224.8	217.8	222.3	229.3	235.5	244.9	240.0	238.1	235.5	-9999.0
146	Kara Sea	212.8	211.2	209.7	204.0	194.2	192.3	194.2	199.6	202.6	202.2	209.2	213.7	212.0	217.7	223.5	223.8	227.0	230.5	225.8	208.6	197.0	192.6	187.6	189.7	193.9	198.1	205.0	213.9	223.0	230.4	-9999.0
148	Laptev Sea	174.0	166.9	159.0	150.5	150.8	151.0	149.2	159.7	173.9	188.6	192.3	191.5	193.4	193.1	197.9	208.4	204.8	200.7	205.8	216.6	218.1	215.4	212.2	200.0	192.4	189.3	188.4	192.5	195.1	199.9	-9999.0
150	East Siberian Sea	144.0	146.3	150.6	153.4	148.1	159.7	174.2	178.7	182.1	181.2	167.7	158.2	158.9	163.0	171.2	172.9	185.0	173.1	162.9	171.3	178.2	185.2	180.0	176.1	166.0	159.9	162.3	169.3	172.7	176.5	-9999.0
152	Gulf of Alaska	201.9	192.3	181.5	181.4	210.7	221.0	212.5	203.1	222.0	222.5	214.4	196.2	194.6	213.3	224.7	218.4	227.9	200.8	186.5	190.5	194.3	194.8	198.5	195.9	206.1	203.9	198.0	199.4	207.0	217.4	-9999.0
154	Southeast Bering Sea	168.9	157.3	170.5	215.9	228.2	215.7	187.4	172.1	193.8	196.1	183.3	180.4	209.5	234.3	225.3	208.5	193.2	168.0	188.6	212.3	212.1	202.2	204.2	200.5	216.3	208.5	193.1	188.6	201.6	215.2	-9999.0