1974 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	173.5	171.6	169.9	169.8	169.0	169.7	172.0	179.5	186.4	189.5	190.8	188.2	187.3	189.3	191.2	191.5	191.6	193.1	193.4	196.1	198.7	197.2	197.8	200.8	199.7	197.3	197.5	196.5	198.0	199.4	-9999.0
34	Hudson Bay	189.6	186.8	184.0	183.8	182.7	173.1	164.7	179.1	194.7	199.3	206.7	211.4	210.5	211.3	212.3	214.7	208.5	203.2	219.2	226.8	224.8	216.0	215.0	228.1	238.2	243.3	233.2	212.2	212.2	203.4	-9999.0
36	Hudson Strait	164.4	169.9	173.5	162.2	168.8	186.9	162.3	162.2	163.1	169.9	171.3	171.2	177.1	171.9	182.3	170.3	152.1	141.8	150.4	172.9	196.9	188.1	177.4	188.2	204.7	199.8	181.0	136.3	157.0	174.0	-9999.0
98	Bering Strait	155.7	154.1	160.0	168.9	175.8	181.5	181.0	179.1	175.0	174.9	174.3	173.4	180.9	192.6	188.4	190.5	191.1	188.5	184.5	182.6	179.5	178.3	190.6	194.8	184.7	192.0	205.8	211.8	206.1	200.8	-9999.0
128	Arctic subocean	118.2	121.9	113.8	117.3	123.6	127.8	121.0	120.6	124.8	129.1	132.8	137.6	132.4	131.5	125.2	116.7	125.7	140.9	136.9	120.4	118.0	124.3	125.1	121.4	120.1	129.9	134.8	137.0	145.2	160.7	-9999.0
130	Chukchi Sea	151.7	150.6	151.5	156.6	149.2	155.1	160.2	161.5	158.7	155.6	152.2	152.6	161.6	170.5	171.3	173.8	178.9	178.6	170.2	163.2	154.8	159.2	163.4	174.5	178.0	188.1	204.7	206.2	202.8	196.1	-9999.0
132	Beaufort Sea	166.3	158.2	155.7	161.2	167.7	178.5	189.2	190.7	189.9	194.9	199.4	199.4	199.0	209.2	217.4	206.8	204.8	206.9	195.1	198.0	203.0	206.3	210.0	210.1	215.9	206.8	206.1	211.2	194.8	182.8	-9999.0
134	Arctic Archipelago	123.2	124.3	129.4	132.8	134.0	131.7	137.5	146.7	148.1	153.4	152.6	141.0	149.3	157.0	151.4	141.2	144.7	143.3	131.6	139.9	159.3	157.6	152.5	150.3	135.9	126.6	134.9	139.6	144.6	157.6	-9999.0
136	Foxe Basin	137.1	143.8	129.4	126.9	130.9	141.4	159.3	174.7	182.9	182.6	172.9	163.8	136.9	144.6	131.9	126.1	133.5	137.5	160.0	163.3	167.3	164.4	161.4	160.8	177.9	139.7	127.0	126.9	136.8	138.2	-9999.0
138	Baffin Bay	115.2	111.0	105.7	103.9	94.5	95.0	100.0	123.1	150.0	150.5	145.6	140.3	124.3	115.5	104.2	119.0	138.6	149.0	140.8	130.2	123.7	136.5	139.2	139.1	135.0	140.7	143.7	157.2	166.5	172.0	-9999.0
139	South Greenland	133.8	138.7	132.0	130.6	123.3	118.3	137.5	159.5	161.6	157.7	154.3	146.9	156.5	151.7	155.9	165.8	161.1	174.5	181.0	177.2	169.2	167.6	168.8	184.1	167.0	162.2	157.9	164.6	167.4	168.5	-9999.0
140	Greenland Sea	112.9	112.6	116.5	117.8	109.4	108.2	103.7	105.7	126.5	138.2	130.6	128.2	128.9	122.6	114.0	130.1	134.9	141.9	155.7	152.5	136.8	130.8	140.4	154.0	148.9	133.4	137.9	133.1	157.6	164.6	-9999.0
142	Norwegian Sea	232.8	228.3	232.3	239.4	242.2	239.4	244.6	219.7	203.8	203.2	192.3	201.4	212.2	226.3	220.5	223.3	231.2	224.0	233.0	232.1	233.3	233.4	226.6	223.1	239.8	243.5	236.1	235.2	226.1	218.0	-9999.0
144	Barents Sea	226.1	226.2	216.9	207.0	210.1	211.6	217.9	216.6	197.7	187.0	185.2	190.6	186.8	194.7	200.0	207.1	207.6	202.7	200.3	205.8	214.0	214.8	205.3	207.0	215.8	223.5	229.0	220.1	222.2	212.1	-9999.0
146	Kara Sea	190.9	186.9	186.3	181.4	176.5	176.9	185.4	202.0	219.2	225.6	225.8	214.8	207.8	209.5	215.6	214.4	216.7	224.9	225.4	228.0	226.6	224.0	220.8	213.5	208.7	210.3	215.9	218.2	215.4	221.7	-9999.0
148	Laptev Sea	177.2	178.3	172.1	174.1	172.0	175.0	170.8	165.2	167.5	174.1	177.0	181.2	184.1	181.0	180.7	182.8	183.3	176.5	169.6	172.3	185.7	185.4	187.6	203.2	202.6	182.5	173.0	176.6	188.7	196.2	-9999.0
150	East Siberian Sea	155.9	156.3	161.0	169.5	175.9	175.5	171.1	167.7	159.9	153.4	156.1	156.1	155.6	158.0	161.1	157.5	155.2	159.6	165.6	166.6	172.6	176.9	184.8	175.9	177.4	184.4	186.4	191.8	203.3	208.6	-9999.0
152	Gulf of Alaska	190.4	182.4	190.0	195.5	206.4	207.1	202.0	200.4	202.0	210.0	211.4	205.7	218.0	215.6	207.6	215.6	208.7	202.9	204.1	207.5	209.7	205.0	225.5	226.5	207.0	207.1	223.9	223.5	215.2	220.5	-9999.0
154	Southeast Bering Sea	194.5	190.2	197.4	202.0	203.4	198.4	189.6	196.1	212.3	193.4	200.3	201.0	206.2	210.0	210.0	212.4	210.6	218.6	212.7	215.6	211.3	210.9	231.0	216.3	197.7	212.0	223.2	225.2	220.3	216.1	-9999.0