1951 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	184.0	182.4	179.5	176.8	174.8	176.3	178.2	179.2	178.8	180.6	182.4	185.5	186.4	187.5	190.8	193.2	191.6	190.4	191.6	195.1	198.6	198.4	197.4	197.6	202.4	209.0	213.7	217.4	218.6	218.6	-9999.0
34	Hudson Bay	211.4	213.0	214.5	221.7	215.7	202.8	202.8	211.4	215.6	212.2	206.8	212.5	213.2	204.9	199.6	197.5	197.4	195.0	193.9	194.9	198.4	204.1	202.5	194.9	199.0	216.3	231.3	247.9	255.5	261.3	-9999.0
36	Hudson Strait	199.5	202.4	200.0	198.5	217.4	197.7	179.3	196.8	179.5	189.5	200.1	206.9	217.3	223.8	214.3	216.8	217.3	215.4	202.9	190.4	187.4	185.3	213.9	209.8	167.5	176.6	190.7	187.1	179.1	160.3	-9999.0
98	Bering Strait	185.0	189.2	183.0	176.1	174.0	185.2	182.6	176.4	179.1	187.8	183.1	178.1	172.8	195.5	204.9	212.2	217.0	210.7	206.4	208.0	209.6	193.8	185.3	189.7	188.9	195.2	193.7	195.6	197.1	195.7	-9999.0
128	Arctic subocean	123.2	118.4	118.0	120.3	116.5	111.7	104.2	104.2	108.6	115.8	125.1	139.5	137.1	132.9	135.4	142.0	143.4	146.5	145.4	136.2	129.1	125.3	126.8	132.6	140.7	168.1	167.2	165.2	173.7	170.3	-9999.0
130	Chukchi Sea	168.5	173.9	174.9	172.5	165.9	166.4	177.9	176.3	164.0	173.7	170.5	171.5	169.6	181.0	206.0	222.2	218.4	215.8	209.2	213.7	207.8	180.0	181.3	182.8	153.9	149.2	163.9	176.8	192.3	185.9	-9999.0
132	Beaufort Sea	193.8	208.2	209.1	191.8	183.9	192.6	203.4	195.8	188.4	185.4	193.5	190.9	177.4	171.5	177.4	180.2	173.9	171.7	185.3	193.5	193.9	191.0	184.6	184.3	197.3	208.4	218.0	229.9	235.6	236.7	-9999.0
134	Arctic Archipelago	158.5	147.6	157.2	159.9	150.4	152.6	154.2	146.1	141.1	135.6	137.1	142.7	143.4	144.8	145.8	159.2	165.8	163.4	167.7	181.0	170.0	152.5	150.0	151.8	165.1	172.9	185.6	201.4	208.6	211.9	-9999.0
136	Foxe Basin	167.3	160.1	148.1	156.1	183.8	193.4	174.6	153.7	153.8	172.2	175.7	159.4	161.5	165.1	164.5	157.2	152.4	157.2	164.3	165.1	179.2	180.5	171.1	183.7	174.9	151.3	155.1	152.9	151.1	160.4	-9999.0
138	Baffin Bay	105.3	99.5	101.5	100.6	106.9	118.4	131.2	134.7	123.1	120.1	122.8	120.2	112.8	106.9	114.3	118.9	122.3	121.5	115.2	112.8	120.0	125.7	126.8	131.4	166.1	169.8	155.2	153.5	148.6	148.4	-9999.0
139	South Greenland	132.8	132.9	126.3	127.3	125.3	149.8	156.3	145.1	145.5	133.2	131.5	140.7	126.7	111.6	114.6	113.4	115.8	118.1	130.8	144.7	154.6	154.9	148.9	156.2	174.3	177.1	179.1	162.3	155.4	182.4	-9999.0
140	Greenland Sea	103.2	102.8	91.6	103.2	96.5	89.7	91.1	104.0	102.8	96.2	97.6	107.8	101.9	93.7	103.3	118.0	116.0	114.3	115.8	122.3	127.1	126.6	124.5	126.4	138.6	161.4	166.7	169.4	168.8	160.1	-9999.0
142	Norwegian Sea	205.8	210.3	212.3	210.9	214.6	210.8	211.5	222.9	223.3	213.7	203.9	207.9	221.1	218.1	214.6	215.5	215.5	211.2	200.8	200.0	213.4	219.3	234.5	236.6	232.4	224.1	228.7	225.3	221.2	230.3	-9999.0
144	Barents Sea	213.4	208.0	211.7	213.7	211.9	210.8	225.2	212.9	220.0	233.1	236.6	228.7	218.9	225.7	230.6	235.6	236.5	236.0	227.3	231.3	227.8	221.7	231.8	230.4	238.0	235.4	230.8	248.6	264.0	233.8	-9999.0
146	Kara Sea	213.2	207.1	195.4	186.4	190.4	195.9	196.9	201.2	198.6	195.7	196.7	204.7	209.0	210.2	216.6	218.3	217.8	217.1	218.7	221.6	226.6	226.7	223.1	224.0	227.5	233.9	238.0	236.5	231.5	230.8	-9999.0
148	Laptev Sea	158.6	152.2	149.4	146.6	136.5	134.4	140.1	145.9	145.3	158.8	171.3	169.3	181.9	192.0	189.5	189.9	179.3	178.4	178.9	181.9	187.3	192.8	196.8	198.7	200.7	203.5	208.2	214.0	218.6	218.1	-9999.0
150	East Siberian Sea	131.6	139.3	154.7	162.5	160.9	150.3	136.5	135.0	156.4	169.3	161.4	172.3	173.1	169.9	182.1	179.4	181.9	185.9	187.6	187.8	201.3	211.7	209.9	207.6	203.9	203.1	195.6	179.7	176.1	180.1	-9999.0
152	Gulf of Alaska	216.4	211.3	200.3	200.2	206.0	214.8	198.5	201.5	197.1	200.0	198.3	190.4	197.9	218.4	217.1	228.0	234.1	225.1	213.8	214.1	212.5	214.2	213.1	212.9	221.3	220.8	219.7	221.3	211.8	206.7	-9999.0
154	Southeast Bering Sea	219.4	209.8	203.9	203.9	205.7	216.9	206.4	194.9	184.4	186.4	180.2	180.3	216.6	228.8	232.5	244.7	221.8	210.9	220.9	223.9	221.6	220.4	216.9	220.1	227.9	225.1	225.0	216.2	203.3	204.4	-9999.0