1968 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	201.2	205.6	210.3	210.3	204.9	206.6	213.8	216.5	217.2	213.3	212.4	212.4	212.4	214.7	217.1	217.1	217.9	218.1	214.3	214.7	217.6	219.5	218.2	219.0	225.0	226.5	226.2	225.0	225.0	227.2	-9999.0
34	Hudson Bay	206.4	197.6	193.8	189.4	196.7	222.5	235.5	237.2	226.9	232.9	239.4	232.4	215.7	228.6	241.6	235.9	230.1	236.0	237.5	244.6	252.6	252.4	241.4	236.8	248.5	245.0	242.2	245.2	246.3	248.4	-9999.0
36	Hudson Strait	257.4	231.6	236.2	214.8	200.6	188.5	198.3	200.1	216.8	201.1	190.9	202.2	223.6	195.6	256.1	246.7	223.4	248.9	215.8	213.0	210.2	223.1	279.1	274.8	227.7	261.9	259.0	220.3	205.3	225.4	-9999.0
98	Bering Strait	194.9	217.3	218.1	220.7	206.0	195.3	201.5	205.1	215.6	191.8	179.0	195.3	199.9	202.4	188.1	199.3	211.9	214.8	211.2	211.5	217.6	229.0	239.0	238.4	226.9	236.8	234.6	218.5	206.0	215.9	-9999.0
128	Arctic subocean	125.0	138.5	176.3	168.1	158.8	155.5	169.3	179.6	171.9	156.4	155.5	150.5	143.8	146.6	150.4	162.3	162.5	150.7	139.1	126.4	124.8	123.4	130.1	123.5	145.6	148.1	141.3	132.4	142.7	161.7	-9999.0
130	Chukchi Sea	202.0	203.9	190.1	201.8	224.6	224.0	199.5	192.3	206.5	186.0	170.7	202.5	199.6	177.0	175.1	192.1	190.8	177.2	197.1	197.4	224.5	206.5	208.7	199.5	182.7	179.3	194.9	178.5	179.4	207.2	-9999.0
132	Beaufort Sea	176.5	184.7	201.6	216.1	220.8	221.2	213.5	214.2	225.5	222.8	220.7	182.4	182.7	189.9	191.2	188.4	197.5	220.0	216.8	217.5	207.9	206.5	233.1	246.3	233.7	216.9	233.5	236.7	240.5	241.8	-9999.0
134	Arctic Archipelago	179.9	181.0	177.1	172.3	186.4	208.7	206.6	212.6	174.5	176.1	182.7	189.2	183.3	172.8	175.5	175.3	166.5	169.2	165.1	166.5	171.9	182.2	173.5	166.9	165.3	164.0	176.3	174.1	179.7	188.4	-9999.0
136	Foxe Basin	259.7	246.8	242.2	240.0	236.1	210.2	210.1	198.1	219.9	218.7	186.8	194.2	187.5	189.7	165.7	175.7	158.2	181.1	188.1	176.4	172.5	167.4	191.8	209.2	183.0	176.8	218.3	231.0	208.1	186.0	-9999.0
138	Baffin Bay	167.4	207.3	228.4	198.4	170.5	175.5	179.6	180.0	173.5	165.8	165.6	154.3	162.0	154.2	157.7	144.9	161.5	151.0	134.5	132.8	135.7	129.7	126.0	121.2	123.6	129.4	129.1	146.0	194.4	205.6	-9999.0
139	South Greenland	169.9	192.4	201.2	203.5	191.5	191.3	187.7	184.1	188.8	183.3	171.4	194.3	196.9	188.7	184.3	200.6	220.9	190.4	189.4	184.4	169.8	166.3	159.3	161.7	177.8	175.3	176.0	197.3	196.7	195.4	-9999.0
140	Greenland Sea	106.0	141.6	192.2	178.1	139.0	123.8	128.0	147.4	154.7	147.1	149.0	147.7	165.0	175.4	150.3	144.6	157.1	136.6	119.4	120.6	116.0	127.0	134.6	169.7	193.3	162.3	146.2	129.7	128.9	148.2	-9999.0
142	Norwegian Sea	235.9	241.9	262.3	243.8	240.3	217.7	214.4	228.6	232.3	247.9	276.2	270.2	269.4	270.9	258.1	239.0	250.6	260.8	275.8	298.3	282.8	258.1	273.1	286.5	278.7	291.0	263.9	281.3	272.0	281.4	-9999.0
144	Barents Sea	185.0	187.5	189.3	239.3	258.2	260.5	264.7	248.4	246.6	226.2	238.5	257.0	262.5	256.1	232.2	198.0	196.6	232.3	240.6	223.4	248.1	232.3	205.4	224.1	248.8	240.6	231.8	218.3	216.2	252.4	-9999.0
146	Kara Sea	220.8	217.2	224.1	213.7	197.8	198.8	211.9	230.5	238.5	234.4	226.4	227.6	235.8	239.2	245.2	241.2	239.2	226.9	223.7	221.0	217.7	226.0	226.2	229.6	240.1	250.6	258.6	260.3	249.0	241.8	-9999.0
148	Laptev Sea	212.2	221.7	216.8	221.7	219.5	214.9	224.3	219.2	215.9	214.3	220.1	213.8	206.8	217.2	223.7	233.8	233.0	231.6	223.1	232.3	237.4	240.2	241.4	227.4	231.2	232.8	213.1	213.4	232.2	227.6	-9999.0
150	East Siberian Sea	188.7	189.7	196.9	205.5	192.3	186.6	197.9	171.6	175.4	186.8	180.6	189.1	191.1	188.0	188.8	199.7	207.0	224.0	213.7	211.9	238.4	222.6	180.6	181.4	205.6	202.5	203.0	189.7	182.1	179.3	-9999.0
152	Gulf of Alaska	211.4	251.3	251.2	242.3	239.2	224.2	243.9	236.0	221.0	191.8	196.1	241.2	245.7	230.0	207.0	238.1	248.6	225.8	210.2	210.7	220.3	261.2	268.4	258.3	245.1	271.3	264.3	253.5	233.6	237.2	-9999.0
154	Southeast Bering Sea	268.6	278.8	260.8	257.9	254.8	195.2	192.1	187.2	176.5	184.1	248.4	279.8	247.6	225.3	222.6	267.9	230.5	222.2	248.7	261.5	261.6	243.3	235.0	242.9	268.5	289.5	245.5	212.7	219.1	251.5	-9999.0