1958 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	200.9	201.1	197.6	198.5	199.0	204.0	206.0	210.3	208.0	205.9	209.8	212.9	218.2	216.5	212.2	215.0	215.9	215.0	211.6	212.2	209.7	207.7	209.4	208.4	214.0	214.4	210.6	211.3	217.2	217.0	-9999.0
34	Hudson Bay	242.4	237.5	232.5	237.9	228.5	228.0	229.7	228.8	238.5	231.4	225.0	227.2	253.5	260.9	250.7	244.7	246.9	255.1	255.9	255.0	245.0	237.8	240.3	237.7	227.8	223.7	228.7	218.2	235.8	232.6	-9999.0
36	Hudson Strait	198.2	217.4	217.2	227.8	175.7	176.4	234.3	230.4	209.5	209.0	208.7	160.8	193.7	220.0	248.4	254.7	174.3	210.5	192.9	181.2	185.9	193.7	209.9	217.0	212.7	177.4	205.2	236.5	252.5	250.6	-9999.0
98	Bering Strait	222.9	219.5	211.1	208.1	206.5	217.6	210.6	195.7	200.4	207.7	218.9	229.4	215.3	212.3	207.6	207.8	198.1	208.6	196.2	209.6	200.3	211.4	242.7	251.6	263.9	252.3	236.0	241.6	236.7	251.1	-9999.0
128	Arctic subocean	122.0	131.9	122.3	112.0	115.4	113.0	118.9	133.6	131.0	131.6	130.8	127.8	137.0	144.9	132.6	127.8	155.0	159.9	146.9	144.2	144.1	141.3	172.1	156.4	135.1	148.3	152.8	156.8	158.6	170.7	-9999.0
130	Chukchi Sea	200.9	202.8	209.2	192.4	200.4	195.6	201.8	195.2	195.6	185.9	196.4	193.5	184.4	173.5	180.0	172.6	172.1	177.8	204.9	215.6	184.7	209.9	235.3	257.1	286.1	257.0	265.1	250.2	242.7	227.3	-9999.0
132	Beaufort Sea	215.2	215.6	220.8	218.1	225.2	233.2	242.5	238.8	221.3	216.6	230.8	248.3	241.8	226.4	221.5	227.6	222.3	233.0	230.7	233.1	225.3	225.2	219.4	221.6	232.1	243.7	237.8	249.5	238.0	221.6	-9999.0
134	Arctic Archipelago	146.3	146.1	141.4	166.4	185.7	171.8	152.3	176.0	164.4	140.0	155.0	154.4	150.1	152.5	144.3	137.4	162.7	189.3	192.4	201.9	196.8	163.5	173.6	189.3	193.4	161.9	163.9	184.1	200.6	180.8	-9999.0
136	Foxe Basin	170.1	190.0	193.8	196.1	184.6	202.7	208.1	163.1	185.5	198.8	154.8	152.7	155.2	160.5	171.0	159.1	143.5	175.2	194.8	171.0	193.1	179.9	159.1	173.3	201.4	202.4	185.6	202.4	153.2	225.7	-9999.0
138	Baffin Bay	149.6	132.7	121.6	125.3	134.8	151.4	150.4	175.3	145.0	130.6	151.2	157.8	148.4	134.5	156.7	158.7	188.3	141.3	118.5	124.1	138.9	138.5	142.5	128.4	139.1	145.5	157.1	148.0	178.3	161.4	-9999.0
139	South Greenland	203.7	186.5	191.4	196.9	205.2	209.3	206.7	212.5	213.3	210.5	209.4	199.2	177.9	169.7	183.7	209.5	196.2	175.2	181.1	191.8	218.0	214.2	189.0	174.9	191.0	196.0	191.3	190.7	193.5	193.5	-9999.0
140	Greenland Sea	148.5	171.1	128.4	123.9	122.1	138.8	124.6	157.4	158.7	133.6	151.8	149.2	150.5	161.6	142.9	140.4	172.6	180.6	177.5	171.1	171.2	203.5	218.3	174.2	193.7	187.9	185.4	196.2	211.5	203.6	-9999.0
142	Norwegian Sea	242.8	241.9	251.5	251.5	246.9	234.0	235.8	232.8	224.4	233.2	260.3	282.2	262.0	279.6	260.5	260.3	247.7	243.0	257.0	277.4	270.2	261.7	245.1	267.0	276.7	268.4	270.9	283.0	269.6	267.4	-9999.0
144	Barents Sea	219.9	228.1	244.9	248.8	235.8	250.5	266.9	238.2	215.9	226.3	225.4	221.2	241.8	227.9	210.4	241.4	257.0	229.6	231.9	221.6	206.4	207.1	212.6	218.7	220.1	230.0	240.2	251.6	253.6	259.1	-9999.0
146	Kara Sea	201.9	207.1	199.5	192.9	198.2	202.0	203.7	219.4	220.2	218.4	223.9	234.6	237.1	232.8	237.2	234.0	230.0	222.6	215.2	214.8	216.0	210.9	211.7	211.4	217.5	216.5	204.4	200.7	205.4	209.1	-9999.0
148	Laptev Sea	185.1	178.4	177.1	180.5	177.2	182.3	185.0	188.5	185.4	197.2	199.5	196.5	207.3	214.1	190.4	199.3	209.4	210.7	199.4	201.2	190.6	184.9	185.0	188.5	200.8	213.1	205.3	203.1	213.0	211.9	-9999.0
150	East Siberian Sea	159.0	172.7	168.4	174.0	183.2	189.3	189.9	193.3	206.5	190.2	184.5	184.3	199.2	192.3	190.3	194.5	191.5	186.7	205.9	191.5	207.7	216.9	199.2	181.5	181.3	190.8	191.8	194.6	200.4	207.3	-9999.0
152	Gulf of Alaska	261.4	236.5	220.2	224.1	224.1	240.3	233.8	232.3	228.3	233.9	252.2	235.4	227.9	227.6	225.9	230.4	221.6	225.4	209.2	213.3	209.2	218.8	253.7	245.0	238.0	251.6	236.9	234.8	236.3	253.3	-9999.0
154	Southeast Bering Sea	244.8	242.1	239.8	237.5	233.2	258.1	241.6	228.1	225.7	225.6	220.3	224.3	226.6	216.2	218.9	216.5	205.6	195.5	208.9	237.9	215.8	281.9	284.5	271.6	269.5	253.1	261.1	255.2	250.6	267.6	-9999.0