1948 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	213.7	209.0	210.6	210.8	208.7	208.3	210.6	216.0	216.2	219.5	218.5	212.7	210.8	210.1	211.9	212.8	216.6	218.6	219.6	214.3	218.5	226.4	232.5	233.7	234.4	237.1	237.2	236.1	240.2	245.5	-9999.0
34	Hudson Bay	232.0	221.7	228.3	241.2	231.8	215.2	210.9	211.9	209.6	221.6	242.7	221.3	218.3	217.3	223.4	206.5	236.8	259.4	241.6	227.8	229.9	254.4	260.0	284.2	291.6	290.0	269.7	251.7	258.6	260.0	-9999.0
36	Hudson Strait	205.2	236.2	237.3	201.7	173.9	224.0	184.1	160.6	163.6	171.5	178.6	238.3	248.9	202.3	234.7	192.5	188.3	181.6	241.5	206.6	189.7	206.9	185.2	187.0	195.9	207.8	210.8	225.7	236.2	233.0	-9999.0
98	Bering Strait	200.9	234.3	225.5	229.0	233.8	236.2	233.9	247.2	245.5	241.9	239.2	224.8	251.1	220.9	199.5	196.9	193.6	183.2	192.0	188.5	203.8	191.1	196.2	203.0	218.4	241.8	252.2	229.2	237.9	233.2	-9999.0
128	Arctic subocean	138.6	130.8	125.0	134.5	121.9	124.8	127.4	115.4	117.4	121.0	127.5	134.5	148.2	149.4	130.2	137.4	135.8	151.5	150.1	140.6	143.0	137.4	160.7	168.5	167.9	166.1	188.6	206.6	185.2	182.9	-9999.0
130	Chukchi Sea	240.1	253.8	248.4	236.8	226.3	223.4	244.1	252.0	247.4	216.6	235.2	248.1	250.2	204.5	158.5	173.5	193.9	219.1	234.6	210.8	165.8	162.1	181.1	226.2	252.2	265.2	233.6	208.1	215.4	200.9	-9999.0
132	Beaufort Sea	194.8	195.3	192.5	186.8	185.5	191.7	194.2	217.0	223.3	222.2	183.1	178.0	180.3	208.2	208.7	231.4	220.7	201.3	199.6	194.8	218.1	248.8	255.6	227.9	230.2	209.1	220.6	237.7	258.3	269.7	-9999.0
134	Arctic Archipelago	151.3	143.7	153.8	147.8	136.5	144.2	164.8	173.9	183.9	178.3	167.0	169.1	162.1	162.4	164.8	179.4	190.1	190.1	177.4	158.2	177.0	185.7	225.7	216.2	198.3	223.3	201.0	212.5	227.8	248.8	-9999.0
136	Foxe Basin	180.9	160.3	162.3	155.5	144.9	155.0	155.5	150.3	185.4	194.1	192.3	177.7	169.9	189.5	195.9	205.1	195.4	180.2	186.4	196.9	177.9	151.9	168.8	181.3	219.7	264.8	282.6	259.0	219.1	233.6	-9999.0
138	Baffin Bay	110.6	106.1	108.8	107.5	120.5	130.4	112.4	100.9	105.1	114.2	125.3	116.3	100.7	102.5	103.9	118.1	141.5	160.8	153.6	128.2	120.4	147.1	166.4	171.9	167.9	156.4	214.5	198.2	176.5	155.2	-9999.0
139	South Greenland	167.4	152.8	143.4	148.6	161.9	160.3	162.9	153.7	160.4	171.0	156.9	142.9	148.9	147.2	144.8	154.1	159.5	183.6	210.8	186.9	190.8	208.7	208.8	214.4	193.1	182.5	203.0	216.3	175.8	174.1	-9999.0
140	Greenland Sea	187.0	145.5	131.2	117.3	111.0	117.7	107.4	102.4	100.0	117.1	136.4	144.0	147.4	158.3	165.2	153.4	127.8	120.7	161.2	146.7	138.2	153.6	178.1	213.4	205.9	178.8	159.6	188.7	172.6	148.4	-9999.0
142	Norwegian Sea	265.9	274.0	264.0	278.6	268.9	280.7	252.7	263.1	277.3	263.3	244.6	275.0	271.7	251.3	264.7	273.0	285.9	276.4	264.3	241.5	271.3	277.2	257.8	273.7	285.7	273.1	255.9	239.1	243.9	238.1	-9999.0
144	Barents Sea	227.3	242.4	272.6	258.1	266.4	255.3	269.5	278.4	260.6	287.0	276.5	221.3	219.0	255.8	262.7	256.5	245.8	235.8	233.4	238.3	223.6	219.2	227.2	220.5	224.7	231.4	251.0	277.6	269.0	254.8	-9999.0
146	Kara Sea	236.8	220.3	225.0	230.7	235.7	237.0	241.0	245.2	246.8	245.9	250.2	252.6	236.4	219.9	220.2	228.9	235.8	238.8	243.1	242.1	249.6	253.1	250.5	252.5	257.5	260.1	250.7	245.3	252.7	262.2	-9999.0
148	Laptev Sea	239.3	231.9	223.0	211.8	194.4	195.0	206.1	211.0	213.1	214.7	203.5	204.0	222.4	238.1	231.8	221.5	222.7	227.2	226.0	229.8	221.5	216.6	230.4	216.4	199.1	211.7	223.8	230.1	234.2	244.5	-9999.0
150	East Siberian Sea	185.2	196.6	208.4	223.3	226.3	206.0	205.3	227.4	207.6	204.7	214.9	215.2	191.0	189.0	240.7	255.9	233.7	210.5	195.8	202.1	223.8	236.2	237.2	239.6	248.1	230.9	228.2	221.8	249.4	276.8	-9999.0
152	Gulf of Alaska	181.8	223.3	210.5	211.9	214.7	228.2	224.0	237.3	241.4	240.7	249.2	223.1	244.2	238.2	230.9	194.7	182.8	171.6	174.9	187.1	195.3	201.7	190.2	184.6	189.1	232.7	256.0	221.3	217.3	225.0	-9999.0
154	Southeast Bering Sea	239.5	246.9	225.5	226.9	238.3	278.2	249.9	247.4	242.3	245.0	267.0	271.1	263.5	251.2	213.6	177.6	164.1	172.1	198.2	204.5	219.7	177.2	173.2	199.2	239.4	296.6	268.1	233.3	237.5	234.8	-9999.0