1956 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	174.9	175.5	175.6	175.4	174.6	175.4	178.2	181.1	182.7	184.4	183.1	182.1	181.7	184.3	186.3	186.1	187.4	189.2	189.2	187.5	186.5	187.2	186.4	185.2	187.8	189.3	190.0	192.4	194.0	197.1	-9999.0
34	Hudson Bay	194.7	202.6	209.0	208.8	191.3	180.6	179.5	193.5	201.7	210.2	202.9	202.0	214.2	218.6	214.5	213.9	214.5	211.1	212.8	218.2	206.4	195.8	195.6	195.0	185.4	188.3	180.0	181.5	190.5	197.2	-9999.0
36	Hudson Strait	162.9	167.4	172.7	180.1	214.1	212.2	179.1	156.8	167.0	177.1	179.0	183.3	185.5	190.7	194.1	182.3	195.4	202.9	208.9	210.6	212.5	209.7	206.5	199.5	189.8	185.8	199.9	195.4	170.4	180.5	-9999.0
98	Bering Strait	173.5	175.6	165.5	157.5	149.8	152.9	163.8	164.9	177.4	185.3	178.2	181.9	177.4	177.3	173.6	176.5	190.5	190.2	190.7	191.1	195.6	205.4	214.5	216.0	213.8	209.3	202.7	198.6	204.9	210.3	-9999.0
128	Arctic subocean	126.5	119.5	119.1	120.6	121.3	121.5	128.8	130.7	138.8	142.5	127.3	121.9	125.8	149.2	155.6	146.5	144.1	140.0	138.9	141.6	137.7	124.4	123.4	131.2	137.1	130.7	141.3	167.2	161.4	157.6	-9999.0
130	Chukchi Sea	166.1	165.1	143.4	133.4	131.6	138.0	143.9	143.0	157.8	175.9	166.5	171.3	160.4	161.1	164.1	168.3	171.0	171.0	179.8	200.7	201.2	203.4	210.4	226.8	221.7	211.4	211.3	209.7	219.8	231.4	-9999.0
132	Beaufort Sea	165.7	165.6	169.2	157.0	155.8	160.3	173.0	181.9	193.5	196.8	200.1	206.8	204.9	206.6	211.7	201.6	202.5	214.4	207.0	196.5	202.3	205.2	205.5	184.7	182.4	160.6	161.1	173.9	184.1	191.9	-9999.0
134	Arctic Archipelago	122.7	126.5	132.1	134.8	133.9	128.7	134.0	134.4	138.5	148.0	162.4	181.9	189.6	191.1	194.5	197.1	176.2	178.6	192.6	178.0	169.8	172.2	147.4	129.3	133.1	146.9	153.5	164.4	178.6	183.4	-9999.0
136	Foxe Basin	141.3	158.7	156.4	161.3	169.9	190.9	194.8	148.4	167.0	153.7	170.0	175.9	182.3	178.7	175.1	185.1	194.5	177.3	172.6	174.9	182.7	188.1	185.8	175.6	182.6	188.4	188.2	178.4	182.6	181.9	-9999.0
138	Baffin Bay	137.8	119.4	111.0	124.5	128.8	127.9	142.3	153.6	147.7	135.3	117.1	108.6	120.8	130.0	136.2	138.4	147.0	149.6	137.7	133.4	132.6	135.9	141.0	147.3	156.5	151.7	154.1	159.6	157.0	154.2	-9999.0
139	South Greenland	176.5	159.8	167.8	176.7	180.1	170.3	158.2	170.1	172.3	162.0	156.6	157.3	156.4	159.9	161.8	170.5	179.6	185.1	187.5	186.1	183.2	179.1	174.8	179.3	175.6	176.3	180.6	180.6	174.7	170.9	-9999.0
140	Greenland Sea	145.3	128.2	106.9	101.1	107.3	107.6	97.3	113.2	136.2	136.9	141.3	142.4	129.6	128.4	130.5	125.1	119.7	133.1	133.3	122.6	117.0	122.6	123.3	130.5	131.4	134.9	134.5	148.3	147.2	144.2	-9999.0
142	Norwegian Sea	215.9	212.2	193.1	189.5	186.7	188.5	195.5	213.0	218.5	214.8	215.0	210.9	209.4	202.7	200.9	205.2	207.1	211.2	222.2	217.1	230.3	232.5	231.9	223.6	220.4	218.7	216.6	215.8	216.1	219.6	-9999.0
144	Barents Sea	182.2	180.6	179.0	181.4	182.1	187.7	196.8	216.0	219.9	208.4	199.8	191.4	175.0	169.7	171.9	182.4	187.4	196.1	205.4	202.4	200.1	205.4	205.8	201.7	205.1	209.6	214.0	215.4	216.1	217.4	-9999.0
146	Kara Sea	199.4	201.7	201.3	203.7	206.6	211.5	213.9	207.4	201.7	207.0	204.7	192.6	186.9	190.8	191.4	189.3	191.6	194.7	193.9	193.5	193.1	193.9	192.9	195.3	204.1	212.4	209.7	205.5	205.4	209.3	-9999.0
148	Laptev Sea	157.4	158.7	159.8	159.4	163.6	169.4	170.7	168.3	155.9	154.0	159.8	161.9	164.2	168.5	178.1	175.8	173.0	171.0	167.1	165.2	167.9	166.5	163.7	166.2	174.4	179.5	192.2	203.7	195.7	192.6	-9999.0
150	East Siberian Sea	137.8	138.8	140.5	142.0	140.5	136.3	140.1	151.4	154.4	152.2	151.5	164.3	167.9	167.6	170.0	177.4	174.3	168.6	171.5	167.4	168.5	178.7	182.7	187.1	196.2	189.8	187.7	182.1	187.0	195.3	-9999.0
152	Gulf of Alaska	209.1	211.9	195.3	186.8	181.1	178.9	192.0	195.5	206.1	203.6	198.5	203.8	197.2	189.2	190.3	193.9	209.6	200.8	194.0	191.8	204.7	232.6	237.5	225.3	224.4	223.4	219.7	213.7	217.9	219.9	-9999.0
154	Southeast Bering Sea	201.7	203.2	201.4	170.9	144.4	141.6	157.6	172.4	212.0	185.4	192.8	207.2	202.7	193.4	187.1	203.1	204.1	203.0	199.5	201.7	198.7	216.5	242.4	240.3	227.6	229.8	225.7	228.5	244.5	247.0	-9999.0