1973 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	202.3	198.2	200.0	206.4	206.4	204.4	205.0	209.6	209.7	212.2	212.5	215.0	212.9	214.9	220.7	218.4	219.0	218.7	216.7	214.3	218.0	217.2	215.8	215.8	217.9	220.8	221.7	222.6	225.7	227.3	-9999.0
34	Hudson Bay	228.8	223.0	217.0	231.1	226.4	213.6	188.0	184.9	188.6	212.9	213.9	221.3	230.5	244.1	235.4	229.0	241.9	236.0	240.1	255.6	274.0	263.4	244.0	231.4	224.7	226.5	227.3	236.3	236.0	224.2	-9999.0
36	Hudson Strait	184.9	195.3	186.9	212.3	229.1	251.7	264.2	261.4	249.1	222.1	203.5	232.0	187.3	220.9	208.5	204.5	208.1	220.2	199.7	185.2	189.6	211.1	262.5	264.7	269.7	277.5	244.5	254.2	297.4	259.5	-9999.0
98	Bering Strait	198.4	196.1	214.4	215.3	215.7	224.5	240.2	234.6	238.6	218.0	209.0	209.9	220.6	234.9	239.8	222.1	212.1	213.7	216.1	212.6	230.5	226.6	220.9	216.7	217.9	225.7	223.1	211.5	216.4	235.5	-9999.0
128	Arctic subocean	142.2	139.1	139.7	135.6	132.0	131.9	126.2	148.1	153.0	150.0	156.6	171.1	165.9	160.7	166.0	149.4	143.6	133.3	136.2	138.5	131.3	144.7	137.7	149.1	160.0	172.8	153.4	145.5	159.9	179.1	-9999.0
130	Chukchi Sea	202.3	186.0	171.1	193.2	215.1	236.2	247.5	219.1	212.6	217.4	195.1	203.8	221.7	215.2	200.9	191.0	169.3	168.9	178.4	184.0	200.0	198.5	180.3	163.1	168.9	169.6	177.5	200.8	201.1	204.3	-9999.0
132	Beaufort Sea	214.9	209.5	229.1	237.9	217.5	193.9	201.0	227.2	235.5	239.7	240.2	223.9	213.5	202.6	223.8	218.3	215.5	219.7	221.1	226.2	242.5	258.3	241.2	224.7	215.6	234.4	254.7	240.6	224.8	231.6	-9999.0
134	Arctic Archipelago	149.6	157.9	163.3	175.5	162.8	159.7	165.2	165.2	168.3	162.6	181.5	186.7	168.4	175.1	175.0	169.9	169.1	168.1	160.7	171.1	201.1	206.4	206.7	191.8	183.5	176.1	176.0	187.7	204.1	206.0	-9999.0
136	Foxe Basin	139.1	135.0	141.1	166.0	164.6	140.9	153.8	173.0	185.9	205.8	222.9	191.7	187.7	192.6	186.5	178.5	162.8	177.7	201.2	168.2	165.1	204.6	186.9	192.9	196.9	221.7	245.1	258.6	228.6	256.1	-9999.0
138	Baffin Bay	110.9	110.3	101.9	101.6	99.6	103.3	135.8	131.5	131.9	165.3	170.9	165.7	157.1	171.3	187.9	171.7	147.2	150.1	139.3	124.7	136.6	135.3	131.3	148.7	152.3	129.9	129.1	157.4	196.1	176.7	-9999.0
139	South Greenland	135.4	127.3	141.0	148.7	147.1	162.3	212.1	238.7	234.0	225.1	234.3	230.1	203.3	188.5	179.5	164.7	176.0	205.3	182.9	170.6	171.5	189.7	210.2	209.9	211.5	196.1	177.1	189.6	199.2	208.7	-9999.0
140	Greenland Sea	93.0	90.2	94.1	111.9	113.1	110.8	130.6	145.0	139.2	154.4	161.9	163.1	152.0	145.8	140.4	141.4	132.0	144.6	141.2	126.3	123.8	123.8	125.4	130.5	143.5	150.7	140.1	136.7	152.0	161.0	-9999.0
142	Norwegian Sea	258.4	254.7	243.2	245.6	252.1	256.8	257.3	252.2	255.1	246.7	238.3	243.3	263.2	271.7	250.4	274.0	276.4	273.2	256.6	262.4	256.4	263.3	253.9	256.0	270.8	241.8	239.1	235.7	236.4	253.0	-9999.0
144	Barents Sea	243.3	246.9	260.3	259.0	250.0	253.9	260.4	269.5	264.8	258.9	264.3	282.5	269.3	251.3	254.4	233.4	247.2	248.5	255.4	251.8	229.1	205.1	201.6	196.5	206.8	238.3	265.7	259.8	261.1	249.7	-9999.0
146	Kara Sea	225.6	221.9	223.7	229.4	234.7	234.1	223.0	225.8	222.2	225.9	222.6	229.1	232.1	233.3	249.4	256.4	255.3	243.7	236.0	224.6	221.0	214.0	216.6	224.0	235.6	233.7	224.7	222.7	230.6	240.9	-9999.0
148	Laptev Sea	206.6	191.4	180.7	178.1	182.1	182.5	185.3	188.6	194.3	190.0	189.1	188.9	189.6	192.4	203.7	203.5	200.2	196.9	198.1	200.8	201.4	199.8	209.0	220.3	217.1	223.9	233.9	240.2	225.0	220.5	-9999.0
150	East Siberian Sea	163.2	169.6	170.7	181.5	190.6	186.4	190.9	185.0	180.2	176.3	180.4	170.4	170.9	170.1	167.3	183.7	194.8	225.9	239.2	228.2	214.1	235.6	230.0	222.4	221.8	222.0	231.1	215.1	215.7	213.2	-9999.0
152	Gulf of Alaska	224.7	240.3	240.9	227.0	221.7	242.1	269.9	278.2	260.9	248.7	231.1	238.2	249.8	263.5	252.6	239.9	232.3	235.3	230.0	234.4	247.0	224.0	215.8	246.1	253.2	257.6	243.2	228.7	246.6	287.7	-9999.0
154	Southeast Bering Sea	217.8	208.9	197.5	206.6	258.4	268.8	246.5	261.1	246.6	238.7	244.3	280.0	262.4	270.5	245.7	251.0	248.6	239.7	232.4	224.4	212.3	215.0	224.0	226.9	225.5	195.7	195.0	202.8	277.0	253.2	-9999.0