1972 04 - daily  - mean of NCEP mean Daily Downward Longwave Radiation 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	198.7	193.1	191.3	194.5	196.2	202.9	204.0	207.9	210.3	211.0	208.9	206.1	206.2	205.5	205.9	206.7	204.7	209.4	217.7	219.4	219.5	222.1	223.5	224.0	231.6	231.7	228.2	226.8	229.0	234.4	-9999.0
34	Hudson Bay	223.9	222.7	205.4	192.9	198.9	214.7	214.4	218.0	222.4	215.0	211.4	217.7	224.5	235.1	244.7	237.8	227.9	216.6	219.6	240.8	234.1	238.3	239.4	219.9	237.9	246.6	245.1	247.2	254.2	257.7	-9999.0
36	Hudson Strait	236.0	226.7	194.5	225.4	242.9	243.4	211.4	211.2	194.6	187.4	212.7	209.6	200.6	220.9	219.9	235.3	206.1	193.5	194.1	185.5	193.5	206.8	205.5	208.1	228.2	208.2	197.8	235.9	232.5	189.8	-9999.0
98	Bering Strait	163.8	173.0	197.2	204.5	197.4	195.9	190.8	200.5	204.5	211.6	206.1	207.4	221.7	197.0	195.3	186.1	201.2	226.7	209.3	188.8	176.7	181.5	183.6	211.6	228.2	229.1	221.9	215.4	213.7	217.6	-9999.0
128	Arctic subocean	153.8	150.9	161.6	128.6	135.4	141.7	130.9	131.1	141.7	148.5	138.5	125.9	131.0	138.5	130.3	119.6	128.5	129.6	141.5	145.4	144.8	160.2	158.1	164.8	145.5	153.4	153.7	154.4	168.0	157.0	-9999.0
130	Chukchi Sea	174.8	179.2	237.8	207.7	171.0	155.0	159.2	176.4	215.5	205.5	195.5	204.0	200.3	172.3	162.1	162.4	173.1	178.0	182.7	168.7	160.2	164.8	175.1	171.3	188.2	183.1	195.3	203.6	196.6	210.7	-9999.0
132	Beaufort Sea	207.3	174.1	159.3	183.1	210.1	235.3	219.7	206.9	198.9	191.7	200.3	206.4	211.7	228.9	223.3	195.0	190.2	204.8	233.4	209.3	192.7	207.9	201.0	235.3	248.7	227.0	226.3	245.1	254.3	243.8	-9999.0
134	Arctic Archipelago	151.4	150.8	154.0	146.4	147.6	157.0	185.2	186.8	169.5	164.7	165.0	161.2	152.8	154.3	154.3	149.7	149.8	149.7	163.3	184.8	178.6	174.3	170.7	176.3	183.9	201.8	165.0	156.3	167.1	189.1	-9999.0
136	Foxe Basin	221.9	150.3	181.0	191.6	214.3	200.2	192.9	196.1	204.5	166.4	163.8	167.3	189.3	184.0	190.1	188.8	185.7	171.0	157.0	172.0	180.6	178.6	197.3	180.3	189.8	193.1	253.8	206.0	167.4	198.9	-9999.0
138	Baffin Bay	134.4	142.1	127.6	114.6	108.1	101.1	105.1	107.1	107.5	114.3	113.5	105.4	107.2	107.6	112.5	116.3	127.0	146.8	165.6	162.9	141.9	155.0	176.9	177.1	168.7	172.2	185.1	187.6	188.3	191.1	-9999.0
139	South Greenland	140.5	141.1	135.9	133.8	129.4	131.8	129.4	124.7	134.5	140.1	137.8	133.9	157.4	150.7	154.4	157.0	183.4	210.0	197.1	193.9	227.6	228.2	229.8	205.7	206.6	190.4	182.6	184.2	197.9	213.8	-9999.0
140	Greenland Sea	115.6	116.2	121.5	118.8	108.8	101.2	114.8	135.8	155.6	122.4	112.5	109.0	102.8	105.7	100.2	107.0	111.3	144.4	159.0	160.6	147.3	148.3	166.7	169.7	171.2	152.3	157.2	154.5	161.6	172.4	-9999.0
142	Norwegian Sea	204.0	245.2	261.2	259.9	267.3	264.9	251.4	247.4	244.9	242.8	249.6	251.4	257.0	266.3	276.6	257.8	253.2	235.8	244.5	281.5	241.8	254.4	230.2	227.5	291.0	252.8	237.6	217.0	247.0	259.3	-9999.0
144	Barents Sea	255.0	243.2	246.4	241.7	220.8	233.7	243.3	258.5	247.2	242.6	226.7	232.9	245.0	262.3	254.8	211.4	240.3	241.5	250.4	224.1	253.3	250.3	250.2	236.6	230.5	212.5	230.4	264.4	260.2	229.8	-9999.0
146	Kara Sea	216.4	213.1	216.3	220.0	216.4	218.0	227.1	236.7	244.7	249.6	239.0	225.5	221.4	211.8	215.3	229.6	214.0	216.0	233.7	250.3	250.7	245.5	251.1	257.1	260.5	282.3	258.2	237.1	246.2	265.9	-9999.0
148	Laptev Sea	199.1	192.9	184.2	195.1	202.8	210.4	204.8	207.8	206.4	219.6	238.4	229.2	212.3	209.0	208.3	213.3	212.6	220.7	227.7	221.2	231.1	234.3	219.1	211.6	226.9	212.0	238.2	234.1	214.3	216.1	-9999.0
150	East Siberian Sea	165.7	159.8	157.9	174.4	189.5	207.1	205.3	197.6	193.9	194.3	181.5	187.2	196.3	204.0	194.3	214.2	210.1	205.4	207.5	197.4	191.4	206.8	223.3	212.8	203.0	188.3	192.2	220.3	218.0	214.6	-9999.0
152	Gulf of Alaska	177.7	198.4	221.4	238.2	221.4	205.0	195.7	204.5	206.4	212.2	204.9	231.3	246.2	202.5	193.5	214.3	255.4	265.3	219.1	214.3	201.2	199.1	210.3	250.3	246.8	235.8	229.7	217.6	221.8	226.2	-9999.0
154	Southeast Bering Sea	222.2	199.2	246.8	235.8	197.8	171.5	174.1	178.3	239.8	237.8	209.8	250.1	205.5	204.3	185.7	253.6	263.2	261.9	226.3	195.1	196.5	213.4	241.7	242.6	245.6	227.9	200.0	217.3	249.1	255.9	-9999.0