1978 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	174.7	172.9	174.7	177.5	177.4	175.3	174.5	178.7	182.7	185.5	186.9	183.7	182.0	182.5	185.3	186.7	189.0	190.0	192.1	192.6	194.7	195.0	193.7	195.3	197.4	198.8	198.9	200.7	203.2	203.7	-9999.0
34	Hudson Bay	178.3	184.1	194.2	193.3	197.8	197.9	186.1	194.6	207.1	209.0	211.7	207.6	204.8	199.9	195.1	202.8	213.9	209.3	198.0	191.0	198.7	203.8	207.0	204.9	215.7	221.3	229.4	229.0	219.5	218.5	-9999.0
36	Hudson Strait	143.0	130.7	148.0	173.1	165.6	170.1	193.7	205.2	183.4	190.2	204.8	208.4	194.0	177.9	161.8	154.7	163.8	175.4	189.4	170.6	169.7	180.4	196.7	195.1	171.3	175.8	192.0	192.6	197.8	210.2	-9999.0
98	Bering Strait	161.7	159.6	156.0	164.3	167.4	174.8	179.0	179.8	183.6	185.1	178.0	183.0	189.0	199.4	199.3	196.1	198.5	204.8	207.7	206.9	205.6	202.7	204.3	202.9	205.8	209.8	209.0	206.8	205.4	198.5	-9999.0
128	Arctic subocean	126.5	114.0	113.7	111.1	120.5	124.9	123.7	110.5	113.3	121.8	119.9	120.6	123.1	114.4	124.3	120.2	123.2	140.6	151.8	151.4	148.7	165.4	174.8	171.5	171.9	154.6	134.4	138.6	145.5	153.6	-9999.0
130	Chukchi Sea	144.3	145.7	142.5	153.1	174.7	172.8	161.7	157.5	158.6	155.9	153.1	165.3	180.2	219.3	206.4	190.6	176.1	195.5	214.3	204.9	200.9	200.4	201.6	202.6	201.8	195.4	194.8	199.1	198.4	194.5	-9999.0
132	Beaufort Sea	174.3	167.1	166.8	176.7	172.5	159.8	178.5	192.9	195.1	205.4	202.4	188.3	185.0	185.3	193.5	204.4	206.3	204.6	208.7	209.5	197.4	184.8	183.6	197.6	200.8	214.4	224.4	233.2	235.1	219.0	-9999.0
134	Arctic Archipelago	134.0	127.1	121.7	126.2	129.2	127.6	132.8	141.0	143.8	145.3	162.6	172.3	159.9	143.5	156.9	164.1	154.3	155.3	162.1	159.3	152.1	150.9	149.7	151.4	155.1	156.7	158.0	172.1	190.6	201.4	-9999.0
136	Foxe Basin	118.8	123.8	140.3	137.3	116.7	127.0	146.3	165.8	149.4	163.9	165.7	174.5	171.7	141.5	137.0	145.5	142.0	136.8	137.2	150.8	157.1	161.8	165.3	158.0	145.9	166.0	172.5	159.4	159.5	168.9	-9999.0
138	Baffin Bay	92.0	102.1	120.1	130.5	129.1	115.5	93.0	107.2	133.7	129.3	113.5	114.8	130.2	121.2	113.9	99.6	117.4	147.2	160.5	150.8	161.1	174.2	171.2	168.8	164.7	133.1	123.1	138.9	135.4	134.9	-9999.0
139	South Greenland	128.8	136.0	162.8	176.3	163.2	155.3	133.3	150.8	161.2	167.9	158.7	136.5	139.3	146.6	149.0	164.1	186.4	188.3	178.9	172.0	167.7	164.5	164.4	177.4	183.8	176.8	157.8	167.3	181.6	179.5	-9999.0
140	Greenland Sea	109.5	101.0	116.1	136.7	143.4	151.9	124.8	97.9	118.4	117.8	106.1	94.3	104.8	109.2	119.9	127.8	154.5	171.1	171.7	161.1	156.2	158.7	161.0	162.6	171.8	171.6	138.1	135.4	139.2	131.1	-9999.0
142	Norwegian Sea	205.1	200.6	206.9	202.8	217.7	228.5	223.2	228.2	217.4	203.5	207.1	207.2	210.6	209.9	208.8	205.9	203.7	205.9	219.3	219.0	224.7	226.0	222.1	204.9	194.4	201.5	205.8	207.6	210.6	210.5	-9999.0
144	Barents Sea	218.6	205.0	192.1	184.9	181.6	187.0	190.2	177.5	167.6	176.0	195.4	196.7	218.5	222.2	220.7	217.4	212.2	187.9	185.7	200.8	205.8	187.3	167.6	174.7	178.6	184.2	189.3	182.9	182.0	189.4	-9999.0
146	Kara Sea	208.5	204.3	201.0	199.9	197.2	185.3	190.2	198.5	194.8	193.0	192.6	185.8	179.5	185.6	197.1	195.4	193.5	199.7	209.6	214.5	218.9	222.8	219.4	217.8	217.2	213.4	209.2	209.1	218.0	225.8	-9999.0
148	Laptev Sea	168.8	173.3	171.4	172.2	178.1	188.5	175.7	166.2	180.0	192.8	198.4	197.8	189.5	186.7	185.8	187.8	184.7	178.2	176.3	179.4	185.6	184.7	184.0	186.1	187.1	190.8	193.8	196.4	197.1	192.8	-9999.0
150	East Siberian Sea	148.5	146.8	149.5	143.6	143.9	148.5	162.1	169.1	173.9	165.7	166.0	175.1	177.2	173.2	168.3	162.7	163.9	164.3	162.9	163.6	164.8	169.8	174.7	173.4	173.8	182.9	192.7	188.2	180.2	177.9	-9999.0
152	Gulf of Alaska	202.3	194.1	190.2	201.9	195.1	201.4	212.1	214.9	210.7	206.1	201.7	205.2	202.7	207.7	209.0	204.4	208.5	211.2	209.7	215.7	220.7	219.4	212.2	213.7	220.1	228.3	211.6	213.1	212.4	217.5	-9999.0
154	Southeast Bering Sea	207.8	176.1	182.6	216.4	202.6	211.2	218.9	217.7	220.4	197.3	207.0	216.7	229.6	240.7	223.7	207.6	198.4	206.7	216.3	220.1	220.9	224.5	219.0	223.3	224.6	226.2	222.4	224.1	224.5	221.5	-9999.0