1977 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	196.2	199.8	206.0	206.6	209.7	212.5	215.4	217.5	217.8	213.0	214.0	214.7	214.2	216.5	220.8	227.3	227.5	220.8	219.0	219.9	218.2	218.9	222.9	226.1	228.9	229.5	228.2	230.8	234.9	234.9	-9999.0
34	Hudson Bay	213.2	206.7	205.2	204.9	206.0	212.1	197.7	206.6	233.5	242.2	248.1	237.1	249.8	256.2	259.0	260.0	262.5	253.9	259.0	262.5	251.4	244.2	234.8	231.7	247.8	258.2	239.3	226.2	250.1	263.2	-9999.0
36	Hudson Strait	182.3	185.8	237.3	243.6	186.2	215.4	223.8	172.0	164.8	160.5	243.3	226.0	186.8	202.2	196.4	204.7	210.0	212.6	238.6	222.2	250.8	220.0	196.4	208.1	215.0	231.5	198.8	194.9	197.0	190.6	-9999.0
98	Bering Strait	170.4	229.7	222.4	222.2	214.8	198.9	201.4	190.9	195.2	218.8	203.3	209.5	200.5	192.9	199.8	219.2	214.1	215.5	211.3	236.9	241.9	227.6	233.9	241.9	235.2	222.5	226.3	208.1	200.9	213.3	-9999.0
128	Arctic subocean	168.5	162.7	150.6	146.4	145.8	151.3	172.7	175.9	164.3	138.9	153.6	166.1	159.7	151.7	169.5	156.4	162.4	194.9	184.1	169.2	176.7	166.3	167.7	179.4	181.7	174.7	164.0	163.0	167.3	171.2	-9999.0
130	Chukchi Sea	150.6	155.8	148.2	149.8	172.7	159.4	164.2	181.1	164.0	153.8	172.6	157.8	161.7	174.9	176.8	179.9	189.5	195.8	201.6	226.0	235.9	227.5	245.9	247.7	209.9	204.8	186.1	193.0	203.0	179.6	-9999.0
132	Beaufort Sea	187.2	191.1	233.8	214.6	231.5	216.7	235.9	248.4	248.3	215.7	227.3	238.2	249.5	241.3	219.6	227.4	222.5	219.1	215.4	215.3	217.3	220.0	234.2	259.2	270.9	256.7	256.7	247.7	228.3	215.5	-9999.0
134	Arctic Archipelago	178.0	163.7	161.5	163.4	163.2	158.9	157.5	170.8	201.4	187.4	174.8	198.3	206.4	198.0	229.9	229.6	226.3	217.9	222.0	208.0	184.7	183.8	197.3	204.4	187.5	198.6	207.4	237.6	242.0	231.4	-9999.0
136	Foxe Basin	187.3	182.9	185.8	208.5	196.6	187.9	216.8	219.4	175.4	207.8	241.5	201.8	202.4	195.5	181.3	214.7	259.1	245.7	235.5	196.7	193.9	172.1	193.7	183.8	179.0	188.0	191.9	212.4	203.7	186.5	-9999.0
138	Baffin Bay	178.2	176.8	156.1	140.4	152.6	189.7	220.8	217.1	182.0	161.8	171.4	150.2	149.1	158.1	133.5	124.2	135.8	143.0	145.4	147.6	154.2	149.5	141.8	143.8	148.3	137.6	143.4	144.1	169.6	174.2	-9999.0
139	South Greenland	176.6	195.1	182.2	160.0	168.3	205.2	232.1	200.7	163.3	150.8	155.0	147.1	143.3	138.1	159.3	159.2	165.2	163.3	172.3	172.1	166.2	155.4	161.8	156.7	154.1	159.6	174.3	168.9	178.8	207.5	-9999.0
140	Greenland Sea	116.2	135.7	133.6	106.1	106.5	150.2	177.6	200.5	202.5	168.1	127.9	133.6	126.0	127.9	125.4	120.7	114.0	117.3	125.7	124.1	133.3	144.5	138.9	129.8	129.6	139.9	133.0	129.0	129.2	150.7	-9999.0
142	Norwegian Sea	272.6	259.1	226.7	215.9	235.1	222.7	204.2	200.7	194.3	199.1	243.4	259.1	243.2	251.5	244.9	231.5	238.7	235.7	244.5	255.1	266.7	265.0	222.7	209.8	222.5	242.6	257.2	271.3	257.0	250.7	-9999.0
144	Barents Sea	218.3	241.9	258.6	247.7	224.1	211.7	208.0	243.1	249.3	213.3	191.1	207.0	217.9	237.7	236.0	233.3	244.3	238.0	249.3	254.1	253.4	245.2	265.3	262.0	268.6	280.8	275.0	276.1	291.5	270.0	-9999.0
146	Kara Sea	209.1	193.2	211.5	223.3	237.2	244.9	245.1	243.7	229.8	228.5	230.3	230.7	227.6	237.8	245.2	255.4	244.9	244.0	244.5	236.7	237.3	245.1	244.9	243.6	249.8	250.3	252.5	260.7	257.6	257.5	-9999.0
148	Laptev Sea	184.7	206.2	197.5	202.2	205.3	201.5	200.0	205.8	214.6	216.9	218.2	217.5	213.7	201.4	211.3	223.9	238.3	200.7	175.1	187.1	185.0	201.7	215.0	221.3	219.1	219.5	216.8	233.0	236.4	221.3	-9999.0
150	East Siberian Sea	200.7	197.8	197.9	207.6	197.4	196.0	201.6	192.8	193.6	195.7	195.7	205.3	198.2	203.9	209.1	214.8	207.1	211.8	197.5	192.6	192.7	194.0	194.9	199.5	191.7	191.9	206.8	214.8	222.9	229.2	-9999.0
152	Gulf of Alaska	248.2	294.3	277.7	284.6	253.6	237.4	241.7	221.3	238.2	249.6	230.2	244.1	192.0	201.0	211.9	221.8	219.1	226.5	236.4	275.5	265.0	236.1	246.5	279.3	267.2	237.6	232.7	214.7	218.5	273.9	-9999.0
154	Southeast Bering Sea	254.0	269.0	227.4	254.5	251.6	215.8	194.5	191.0	247.7	243.1	178.4	167.4	163.6	179.5	194.3	188.0	199.5	223.7	262.3	268.3	263.6	236.7	261.9	253.0	244.1	208.7	209.4	197.1	257.4	271.6	-9999.0