1957 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	206.2	207.6	206.4	203.8	206.0	207.7	204.9	205.4	208.8	209.8	210.0	214.5	216.3	214.7	217.8	216.9	213.6	215.4	212.1	215.1	216.4	220.6	220.3	221.7	223.7	222.9	223.9	227.6	227.8	229.1	-9999.0
34	Hudson Bay	205.8	183.3	206.8	221.8	232.5	222.2	206.8	207.9	207.4	208.9	211.9	223.7	224.6	211.9	232.9	235.3	215.1	228.3	252.2	250.0	237.6	257.0	266.4	275.6	277.3	262.0	252.5	258.7	260.5	264.2	-9999.0
36	Hudson Strait	187.6	210.6	190.1	176.0	179.1	197.3	215.6	220.9	237.7	259.9	267.9	228.4	192.2	185.6	172.6	185.3	189.8	193.6	202.1	227.2	214.9	181.6	162.8	173.3	223.9	270.1	273.9	269.8	222.8	193.7	-9999.0
98	Bering Strait	210.9	214.3	220.3	218.2	221.4	234.9	225.8	220.7	207.8	219.6	236.7	254.9	224.4	208.1	213.1	211.9	217.7	217.2	221.3	219.7	212.8	216.2	213.3	211.5	219.0	223.0	218.5	216.9	208.3	205.5	-9999.0
128	Arctic subocean	130.3	142.7	136.8	145.5	153.3	144.0	124.2	121.4	128.3	125.1	126.8	129.1	141.8	145.9	144.2	147.6	146.3	155.4	146.8	164.9	151.7	133.4	139.9	140.3	141.6	155.5	170.4	162.7	149.6	146.1	-9999.0
130	Chukchi Sea	183.4	182.0	171.7	195.3	232.7	251.3	231.2	250.2	221.4	236.8	258.8	270.4	221.8	197.4	201.7	223.2	246.6	237.5	226.9	216.1	207.0	192.5	190.1	193.2	194.0	188.9	181.4	179.0	187.2	186.2	-9999.0
132	Beaufort Sea	197.1	217.0	221.5	210.7	210.4	197.0	205.4	195.0	196.7	181.4	182.1	189.2	204.9	209.4	222.0	226.4	232.1	230.2	221.0	214.9	221.4	231.2	219.2	221.7	223.3	222.9	242.6	246.2	236.5	228.3	-9999.0
134	Arctic Archipelago	153.5	181.0	187.8	171.7	157.9	162.3	159.4	156.1	165.6	163.5	156.8	166.7	179.9	188.2	214.0	209.4	203.7	202.3	184.6	171.8	166.6	175.8	186.8	167.2	165.1	175.7	202.1	209.9	192.6	178.1	-9999.0
136	Foxe Basin	160.8	156.4	163.0	183.3	191.4	200.9	203.6	209.7	181.9	205.4	203.2	160.0	173.9	172.5	191.7	196.7	212.1	190.2	189.8	214.2	197.5	178.6	176.8	206.1	180.7	164.6	159.5	172.3	184.6	196.2	-9999.0
138	Baffin Bay	153.3	163.1	147.0	138.5	128.2	140.0	155.3	143.0	155.2	128.6	109.6	103.9	111.2	123.6	120.8	133.8	129.7	126.0	134.8	140.2	128.4	136.0	158.6	174.1	172.9	151.6	128.2	120.1	112.0	115.6	-9999.0
139	South Greenland	202.7	184.9	167.9	166.6	198.7	226.2	217.3	194.1	186.0	201.2	200.8	195.0	196.7	189.0	188.0	187.2	172.1	171.4	167.1	160.7	159.0	166.0	176.1	206.5	197.5	175.3	185.7	186.3	205.8	212.3	-9999.0
140	Greenland Sea	151.1	179.9	159.5	136.7	118.2	127.3	144.7	155.7	132.9	123.8	124.4	140.1	153.8	158.4	161.8	168.5	188.0	171.3	142.5	128.3	125.5	125.3	137.4	150.6	189.8	165.3	163.5	146.6	142.0	149.2	-9999.0
142	Norwegian Sea	271.2	270.9	276.4	289.4	288.0	247.2	249.7	238.6	257.8	233.3	222.7	221.2	217.1	227.6	246.8	265.7	280.8	280.0	265.7	241.1	247.6	264.9	265.2	272.3	247.0	261.8	269.1	265.4	258.9	242.6	-9999.0
144	Barents Sea	222.9	200.1	203.7	229.0	258.4	261.3	253.2	219.9	216.4	250.3	238.6	226.3	236.4	222.3	227.3	227.7	247.9	231.8	242.5	268.6	279.7	269.8	259.5	247.6	257.8	255.8	252.9	264.6	271.1	283.9	-9999.0
146	Kara Sea	226.5	226.6	219.1	209.9	203.0	210.9	211.9	232.5	244.0	241.2	237.8	242.9	245.1	246.8	238.8	224.6	218.8	229.7	219.5	224.2	237.3	240.4	238.5	232.7	230.4	233.7	237.2	240.4	242.2	250.5	-9999.0
148	Laptev Sea	209.2	220.4	216.8	209.8	207.1	200.4	195.1	184.8	193.4	195.6	192.5	194.3	202.4	213.7	217.7	225.7	219.9	211.7	198.5	203.1	199.9	203.3	199.6	201.7	204.7	215.9	209.3	216.0	219.9	221.2	-9999.0
150	East Siberian Sea	203.7	210.1	202.0	198.2	199.1	192.7	193.4	194.6	204.6	201.8	218.1	236.0	232.9	219.9	201.1	195.0	195.0	200.3	199.7	215.8	218.5	220.7	211.7	206.8	207.2	200.2	198.9	212.8	232.3	222.9	-9999.0
152	Gulf of Alaska	231.2	239.2	231.9	220.4	215.2	248.3	237.2	219.8	206.9	203.1	215.3	231.1	218.0	223.1	222.3	230.4	218.2	217.5	214.9	221.2	239.1	235.7	231.1	245.8	250.9	251.9	247.8	237.5	228.5	215.9	-9999.0
154	Southeast Bering Sea	239.9	222.1	197.0	203.7	261.8	245.9	218.9	263.2	237.4	248.1	287.5	282.7	242.1	209.2	214.1	249.4	259.1	253.7	234.9	238.6	240.4	223.3	242.6	264.0	253.4	249.4	245.6	241.4	232.7	222.0	-9999.0