1998 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	207.2	210.3	209.2	210.7	207.1	205.3	206.7	208.8	213.2	217.9	223.1	224.6	223.2	220.2	218.5	217.8	214.4	215.3	212.2	214.4	217.0	217.0	219.1	221.4	223.2	225.1	227.6	228.2	227.7	228.0	-9999.0
34	Hudson Bay	234.5	227.0	225.2	236.6	224.6	215.8	212.2	205.1	212.9	221.9	233.9	254.3	258.4	244.1	228.2	228.2	234.2	236.6	228.1	228.7	237.7	248.2	255.0	248.2	238.5	248.2	258.7	267.9	264.8	263.5	-9999.0
36	Hudson Strait	173.5	185.5	209.3	212.3	195.6	215.1	240.4	224.5	211.6	197.5	173.7	203.5	220.5	259.2	243.9	240.0	237.1	263.7	239.0	205.2	230.2	195.9	200.0	228.2	234.9	218.8	208.5	244.4	262.5	223.2	-9999.0
98	Bering Strait	212.4	211.1	213.3	231.5	215.1	215.9	225.0	216.5	216.4	235.7	232.1	230.2	221.9	238.0	247.9	237.7	231.5	246.8	228.8	236.2	234.1	234.8	243.4	237.1	232.0	221.1	236.2	234.9	223.0	223.5	-9999.0
128	Arctic subocean	146.1	168.3	155.8	154.5	167.0	166.4	175.9	160.5	155.5	152.7	160.2	167.1	164.9	172.4	183.6	178.5	160.6	149.3	145.6	165.9	177.8	174.8	171.5	168.9	165.3	166.1	181.7	179.8	162.5	162.3	-9999.0
130	Chukchi Sea	224.9	221.8	223.8	247.9	215.5	191.3	203.2	212.7	209.7	262.0	249.4	242.8	233.6	236.7	239.2	222.2	219.9	209.7	217.4	211.1	232.3	250.3	242.8	216.5	198.5	209.8	261.6	230.8	209.9	180.5	-9999.0
132	Beaufort Sea	204.9	205.5	211.6	216.8	211.3	216.2	225.5	227.9	231.7	220.1	216.2	224.9	220.9	213.7	228.0	238.4	239.9	249.0	248.6	246.0	244.8	242.1	246.6	263.6	263.8	246.3	235.6	238.9	246.4	246.1	-9999.0
134	Arctic Archipelago	170.3	180.7	174.9	170.8	168.5	177.4	171.4	168.7	187.2	205.1	219.2	204.4	203.4	195.5	182.4	201.2	216.2	204.2	210.8	209.9	213.6	224.1	211.3	213.6	225.6	240.9	233.7	205.6	197.7	209.5	-9999.0
136	Foxe Basin	156.5	154.8	172.0	168.1	165.9	203.1	207.8	230.3	214.7	206.0	195.6	186.2	212.0	190.2	181.7	167.7	180.0	198.5	170.7	197.2	181.8	165.2	180.4	189.2	195.5	212.6	256.6	243.4	211.2	221.6	-9999.0
138	Baffin Bay	171.2	198.3	161.8	145.7	134.0	127.0	140.7	171.7	205.7	188.8	223.7	213.3	207.9	196.8	172.4	134.4	127.8	125.3	138.4	156.9	166.1	162.9	159.3	165.2	172.6	172.7	158.9	152.2	172.7	186.0	-9999.0
139	South Greenland	207.8	194.8	184.3	166.4	167.5	161.9	166.2	194.8	206.9	223.3	224.9	229.2	239.1	212.7	203.7	182.8	153.2	164.5	190.6	191.6	186.8	163.0	175.9	165.7	178.3	191.3	179.3	175.6	182.4	192.3	-9999.0
140	Greenland Sea	153.5	191.0	171.2	145.8	136.4	132.3	138.3	133.8	144.7	141.6	143.6	169.3	171.1	182.9	188.3	155.1	132.4	133.2	149.2	162.9	158.8	161.3	153.2	141.4	141.6	163.0	171.1	155.0	143.2	157.4	-9999.0
142	Norwegian Sea	228.2	212.2	211.1	218.6	210.0	213.3	215.4	207.7	205.7	204.5	205.8	234.3	234.4	219.9	228.0	233.0	254.5	241.0	247.4	247.8	236.4	245.0	248.0	268.7	274.6	279.7	275.1	273.3	293.5	268.3	-9999.0
144	Barents Sea	190.1	194.9	205.1	204.3	221.4	230.7	217.5	219.8	213.5	209.8	203.4	192.4	189.8	190.5	200.9	213.5	193.0	185.1	223.9	257.5	268.2	249.1	245.9	248.7	249.4	256.6	273.1	242.7	222.5	223.0	-9999.0
146	Kara Sea	231.8	239.7	228.1	216.8	219.9	224.5	217.8	223.6	232.5	240.4	245.4	240.3	228.2	227.2	233.1	231.7	224.5	225.2	210.1	207.5	212.8	218.1	216.5	218.2	222.6	227.8	227.9	242.9	249.1	240.7	-9999.0
148	Laptev Sea	184.5	186.5	203.6	228.1	219.9	193.0	210.1	209.7	200.6	200.1	213.8	211.1	216.6	212.5	205.7	216.7	213.1	202.4	201.7	207.9	201.3	203.0	205.1	202.2	210.0	215.6	214.1	205.9	206.5	218.2	-9999.0
150	East Siberian Sea	174.3	176.3	170.5	171.9	173.5	187.0	182.2	180.2	182.6	179.4	187.5	198.7	197.9	204.1	190.4	181.0	198.9	211.9	201.9	195.3	195.7	182.6	199.3	235.9	226.7	199.6	198.2	204.4	195.6	186.9	-9999.0
152	Gulf of Alaska	256.4	229.3	251.9	258.6	240.3	253.4	245.4	230.6	220.2	246.8	248.6	219.4	230.8	264.8	274.6	271.9	271.4	259.8	244.9	233.4	228.2	227.7	231.3	236.7	247.1	233.4	256.1	262.3	249.0	264.8	-9999.0
154	Southeast Bering Sea	237.2	237.3	264.8	236.4	248.4	238.1	217.4	221.6	248.6	281.6	235.8	227.0	271.8	268.7	256.8	244.5	242.4	247.7	250.3	238.8	244.1	250.7	239.1	234.9	231.3	226.9	274.5	218.1	208.0	259.0	-9999.0