1971 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	159.0	163.5	166.4	168.2	170.4	172.1	173.0	172.8	173.3	173.6	173.7	176.8	179.9	184.2	188.2	192.3	192.9	195.5	196.1	193.2	192.5	194.9	199.8	202.1	204.4	203.9	202.3	202.1	201.2	204.7	-9999.0
34	Hudson Bay	175.4	177.7	183.6	183.0	191.4	202.4	207.2	208.4	198.7	202.5	206.2	197.7	187.5	195.2	213.1	230.1	229.1	232.2	241.8	244.0	240.1	236.4	237.2	228.1	221.2	217.3	218.0	219.8	222.4	223.2	-9999.0
36	Hudson Strait	175.4	172.5	182.6	181.8	185.3	173.3	161.0	146.5	165.4	166.5	163.5	186.4	186.8	173.0	168.6	182.8	208.3	218.3	222.3	204.9	202.0	211.7	230.6	234.5	227.5	214.6	208.9	203.7	199.3	192.4	-9999.0
98	Bering Strait	150.9	149.4	159.6	173.0	172.9	170.8	170.0	162.2	158.8	160.8	160.0	176.4	192.2	194.2	185.5	178.5	184.2	186.3	179.6	176.0	178.7	184.9	197.9	204.5	211.8	213.0	201.9	194.8	181.7	183.2	-9999.0
128	Arctic subocean	105.8	107.2	101.2	96.8	106.7	110.2	114.5	120.9	125.1	121.2	123.8	122.7	118.8	119.9	118.9	122.9	130.2	138.6	161.0	176.3	175.3	172.6	172.3	165.5	173.8	173.6	170.4	161.2	153.6	146.4	-9999.0
130	Chukchi Sea	135.7	139.8	144.2	146.1	151.9	153.7	148.9	143.9	149.4	144.4	142.1	150.4	176.6	178.5	179.9	174.2	179.9	177.8	169.1	167.9	171.3	174.7	175.6	179.8	193.3	197.7	203.7	183.1	162.6	167.5	-9999.0
132	Beaufort Sea	156.3	167.2	170.2	184.3	190.0	195.8	192.2	175.3	165.3	165.2	168.2	178.3	194.6	210.1	206.9	198.0	190.9	194.5	203.4	214.8	229.1	229.7	238.3	236.1	231.6	227.1	215.6	213.4	211.5	213.3	-9999.0
134	Arctic Archipelago	121.0	122.3	124.2	120.4	122.2	127.7	133.1	126.8	124.6	127.0	132.6	136.5	131.2	140.1	142.5	149.6	165.8	187.9	195.1	189.2	196.5	205.0	199.9	195.5	201.1	205.9	211.1	198.4	196.9	192.5	-9999.0
136	Foxe Basin	143.5	136.9	126.9	131.8	140.4	140.8	133.3	133.7	148.7	148.0	140.2	131.5	139.3	152.5	158.1	148.7	168.5	202.2	194.6	169.9	168.2	174.2	180.1	185.2	182.9	184.6	192.0	202.0	199.6	200.1	-9999.0
138	Baffin Bay	109.4	113.9	103.7	92.7	88.8	86.8	88.9	99.8	105.9	98.7	101.9	113.4	113.0	102.3	108.6	117.1	111.4	127.7	143.5	141.5	147.3	146.2	141.5	143.6	149.8	154.1	161.0	162.0	160.1	155.4	-9999.0
139	South Greenland	145.6	144.7	155.1	141.2	129.9	124.9	127.0	122.1	127.7	137.7	143.9	141.4	137.2	135.4	144.3	149.0	134.6	136.5	142.7	143.8	140.9	144.2	156.2	165.8	175.7	182.1	177.9	176.6	178.9	177.5	-9999.0
140	Greenland Sea	99.0	107.0	110.1	112.9	109.7	105.8	104.7	101.8	107.0	103.6	107.7	109.5	113.1	107.5	104.2	113.7	129.0	135.4	139.9	144.7	149.9	143.5	138.7	135.5	140.3	149.4	153.2	150.1	151.2	145.9	-9999.0
142	Norwegian Sea	209.6	224.8	206.6	204.3	211.8	215.5	224.5	228.6	220.7	215.6	231.0	216.0	213.3	219.8	230.3	230.4	225.7	226.5	223.1	219.1	217.5	214.5	216.0	209.9	196.2	200.2	204.7	202.9	203.2	211.3	-9999.0
144	Barents Sea	207.8	191.0	199.0	203.7	194.1	185.6	181.6	199.6	219.0	221.9	211.5	216.3	216.5	206.5	189.3	182.9	184.8	196.2	205.7	210.5	203.2	185.9	182.4	179.3	168.7	170.3	188.1	199.6	202.1	208.4	-9999.0
146	Kara Sea	168.2	178.7	177.9	180.1	185.3	187.3	190.3	192.9	192.1	184.0	184.2	192.4	199.0	205.5	213.1	216.5	220.1	216.8	201.1	191.9	193.1	203.0	209.4	215.6	218.3	216.6	208.8	207.5	208.5	220.8	-9999.0
148	Laptev Sea	147.9	151.7	155.5	157.1	159.1	163.1	164.9	168.2	174.7	182.2	173.5	165.6	169.7	177.5	185.8	195.1	184.9	183.3	193.2	183.7	169.0	167.6	171.9	175.3	185.3	188.2	194.9	201.2	201.5	202.5	-9999.0
150	East Siberian Sea	159.6	166.0	169.3	169.4	166.6	156.8	150.9	151.0	152.7	159.6	164.6	165.8	165.0	160.4	154.6	152.6	155.7	159.4	160.5	163.6	167.4	169.8	184.4	205.0	209.9	202.1	199.1	200.7	197.0	199.1	-9999.0
152	Gulf of Alaska	184.4	188.2	203.0	205.4	201.3	202.1	194.6	188.1	185.0	182.5	193.2	211.0	214.6	211.3	195.7	205.3	208.4	206.7	197.7	194.3	194.0	212.0	212.7	208.6	225.8	225.0	216.0	204.9	203.1	204.1	-9999.0
154	Southeast Bering Sea	174.6	182.4	178.4	173.8	173.3	173.9	178.3	175.5	168.3	174.3	188.2	207.2	203.6	207.3	192.0	183.0	209.6	197.0	184.3	196.5	204.1	203.7	209.3	213.9	229.0	228.0	216.9	211.3	187.1	183.1	-9999.0