1970 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	204.3	204.0	200.7	202.9	205.0	204.1	203.5	203.9	207.7	210.2	210.8	212.9	212.6	211.7	214.2	220.3	214.0	206.0	207.1	209.0	216.5	216.0	217.7	220.3	218.3	220.3	220.5	220.9	221.7	219.6	-9999.0
34	Hudson Bay	203.4	209.7	196.6	202.1	214.1	204.3	224.1	223.2	219.5	218.7	220.0	225.4	228.2	228.8	229.7	230.0	219.7	213.7	228.1	239.1	242.8	244.5	253.7	263.4	259.5	256.0	249.4	250.7	247.4	251.1	-9999.0
36	Hudson Strait	210.7	199.0	180.8	202.7	197.5	183.0	174.4	174.6	183.1	205.4	235.2	204.1	201.2	204.0	192.6	168.4	175.0	179.9	184.6	179.9	195.4	195.5	207.4	248.6	254.2	263.2	247.6	225.5	192.9	198.4	-9999.0
98	Bering Strait	205.3	187.8	199.6	210.6	206.7	202.9	193.3	192.3	195.9	200.3	209.2	195.6	231.8	224.6	223.4	244.8	237.7	236.5	227.8	227.7	252.8	240.9	230.7	223.9	206.8	199.0	205.2	218.4	233.7	237.0	-9999.0
128	Arctic subocean	138.4	137.8	143.3	143.2	139.2	137.3	170.5	174.6	198.1	174.6	155.8	144.8	149.0	170.9	171.4	152.7	129.9	119.0	111.3	122.5	136.9	133.7	122.9	117.5	112.0	119.8	133.5	141.6	152.9	151.8	-9999.0
130	Chukchi Sea	195.1	176.3	156.1	157.2	168.3	166.1	162.9	149.6	155.3	156.7	160.2	163.4	196.1	182.1	203.5	251.3	249.8	246.4	247.6	230.3	260.2	233.1	212.2	200.6	180.3	184.7	193.0	183.9	192.0	189.6	-9999.0
132	Beaufort Sea	241.8	210.3	197.8	214.9	207.8	210.4	203.0	201.0	210.3	226.5	225.1	219.7	217.3	215.6	214.5	219.1	227.0	227.9	234.5	226.6	232.5	230.4	234.4	245.6	232.7	227.7	218.8	217.1	226.0	234.4	-9999.0
134	Arctic Archipelago	158.3	157.8	157.3	154.1	155.5	156.5	158.0	162.3	181.3	185.1	186.2	190.2	191.0	198.9	206.4	196.8	182.7	184.4	182.5	157.4	165.6	171.6	174.5	190.9	178.9	190.2	182.9	178.8	184.4	177.6	-9999.0
136	Foxe Basin	178.0	181.5	186.1	177.4	171.4	199.0	205.1	210.1	192.4	176.3	172.5	197.7	179.2	163.6	178.7	209.2	180.2	177.7	184.2	184.3	150.6	167.5	180.2	179.0	172.4	196.7	188.3	159.9	172.0	173.0	-9999.0
138	Baffin Bay	168.8	159.4	139.6	126.9	134.2	176.6	219.8	223.5	210.2	171.4	141.7	124.2	118.6	122.2	140.9	141.9	134.0	123.0	121.2	126.8	131.3	142.3	133.1	132.4	124.8	100.6	99.1	107.3	114.9	116.4	-9999.0
139	South Greenland	179.9	184.4	158.8	165.3	212.7	228.1	217.4	212.1	194.2	192.7	176.2	154.8	154.1	150.5	148.5	142.0	148.2	157.4	156.6	164.1	160.1	157.1	147.6	158.0	171.8	178.8	178.7	196.9	208.6	192.1	-9999.0
140	Greenland Sea	136.2	136.9	152.4	138.5	120.4	154.3	198.3	192.6	187.8	170.8	136.5	112.8	100.3	98.6	113.6	128.1	119.4	134.1	153.2	173.7	156.1	128.3	131.2	135.3	122.9	133.1	146.1	149.3	137.2	144.8	-9999.0
142	Norwegian Sea	230.7	220.9	225.1	229.4	234.1	248.1	228.4	245.6	239.7	221.3	224.6	247.3	236.7	232.5	256.8	286.5	281.2	271.0	277.2	260.2	248.8	247.1	255.9	271.8	263.9	257.2	262.6	256.5	261.8	266.9	-9999.0
144	Barents Sea	216.9	244.0	251.8	246.3	252.9	265.7	249.1	249.0	262.2	249.4	224.7	234.7	234.6	223.2	208.9	223.6	252.1	224.3	184.6	182.7	223.2	236.4	220.5	203.6	208.9	229.0	247.1	260.3	247.5	249.3	-9999.0
146	Kara Sea	238.0	235.9	224.6	226.9	227.5	220.2	208.3	209.5	221.9	235.0	242.6	241.9	232.4	236.3	249.7	249.1	219.1	212.2	221.6	228.4	225.2	218.4	221.0	233.3	234.4	231.7	228.5	234.2	232.7	223.0	-9999.0
148	Laptev Sea	173.5	186.4	203.0	198.9	191.4	184.1	184.5	185.4	181.8	185.4	199.2	218.1	219.7	213.0	203.6	228.0	243.4	210.6	195.4	192.1	218.5	233.0	237.3	208.0	217.0	234.5	230.6	212.6	210.0	212.4	-9999.0
150	East Siberian Sea	166.5	172.9	186.4	189.3	187.6	185.4	185.9	188.7	191.5	175.6	165.6	171.9	172.9	181.2	172.5	173.5	178.0	193.7	207.2	202.0	200.1	196.7	213.7	231.1	222.3	207.6	235.7	229.4	239.9	233.9	-9999.0
152	Gulf of Alaska	207.0	214.6	246.8	236.6	226.6	225.3	214.4	221.0	225.3	223.6	217.4	237.8	271.4	257.0	255.5	262.3	260.0	245.8	233.0	243.5	264.9	245.4	232.8	225.3	213.7	214.4	248.1	261.2	268.5	259.5	-9999.0
154	Southeast Bering Sea	217.0	199.3	176.8	173.7	181.4	179.5	192.5	195.1	193.0	190.4	190.2	277.4	267.6	233.5	248.9	283.4	268.9	250.6	246.3	290.7	267.7	246.1	235.4	218.5	202.6	231.7	260.2	264.6	268.6	256.0	-9999.0