1999 04 - daily  - mean of NCEP mean Daily Clear Sky Downward Longwave 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	173.2	176.6	178.3	179.8	183.0	184.4	183.2	179.3	178.3	179.0	183.0	188.7	194.1	193.5	191.0	188.9	189.6	191.2	191.6	192.5	193.7	195.7	198.4	199.3	199.4	199.5	197.2	195.7	198.2	202.7	-9999.0
34	Hudson Bay	177.8	183.8	197.4	198.6	203.7	210.6	217.4	216.1	210.5	206.7	203.9	207.9	222.6	220.8	212.0	207.5	211.8	218.3	218.0	215.0	211.4	207.6	213.4	229.0	232.2	238.0	238.0	233.3	234.2	236.2	-9999.0
36	Hudson Strait	145.7	151.9	150.7	162.8	178.4	179.0	189.1	201.8	197.6	195.1	184.0	187.1	191.5	204.0	219.1	212.5	217.8	212.1	192.6	202.1	200.8	200.7	201.9	190.0	182.1	190.5	193.2	208.3	221.0	209.3	-9999.0
98	Bering Strait	176.6	175.2	163.1	166.4	173.2	171.2	159.7	156.8	166.7	172.7	180.4	176.6	176.0	179.8	187.7	188.6	199.8	205.8	209.5	213.3	213.5	205.7	204.3	197.1	192.6	186.7	184.6	191.3	197.8	205.0	-9999.0
128	Arctic subocean	131.3	129.2	137.8	139.0	128.8	122.6	120.2	123.5	124.0	127.4	124.6	128.5	131.0	135.8	136.4	134.1	136.3	142.2	143.4	143.5	136.3	142.7	143.2	143.3	139.6	147.8	143.1	139.9	145.8	150.2	-9999.0
130	Chukchi Sea	150.5	158.2	148.8	163.2	178.4	173.2	153.5	151.0	160.2	163.4	157.6	155.4	162.0	157.5	172.2	177.7	195.6	191.0	188.1	187.4	178.4	188.9	182.1	174.8	170.9	172.4	171.6	182.3	200.3	209.7	-9999.0
132	Beaufort Sea	178.2	209.4	194.5	188.7	190.1	190.2	190.4	182.7	176.0	173.8	186.2	205.1	198.3	194.3	199.2	214.2	215.5	218.5	221.6	218.8	217.9	219.3	223.0	211.2	213.1	200.5	187.6	186.1	195.7	213.7	-9999.0
134	Arctic Archipelago	136.5	154.8	176.0	157.6	153.1	158.1	162.8	161.2	151.4	147.5	148.7	158.2	176.6	176.1	171.7	174.1	183.8	182.1	164.1	170.3	163.0	167.4	174.3	174.0	166.4	170.7	165.4	158.2	160.5	169.2	-9999.0
136	Foxe Basin	129.5	138.7	140.5	164.1	155.3	150.3	159.7	177.7	178.4	175.1	166.9	177.7	163.6	186.4	194.4	195.7	185.0	177.5	194.1	184.4	179.5	171.6	158.6	163.3	180.3	173.1	183.5	193.6	168.9	149.6	-9999.0
138	Baffin Bay	136.3	123.1	132.5	132.2	112.9	107.6	101.9	100.7	110.2	113.1	113.4	125.8	137.5	133.6	136.9	141.3	126.8	129.4	141.8	146.2	137.6	150.5	147.2	137.7	135.2	149.7	154.3	151.8	139.9	130.0	-9999.0
139	South Greenland	180.5	177.7	171.2	163.5	157.6	156.1	156.2	145.7	129.3	131.0	138.3	139.4	155.8	160.4	157.6	154.9	152.0	146.1	166.0	184.9	181.9	173.3	168.8	165.0	165.7	171.4	177.9	169.8	163.7	156.7	-9999.0
140	Greenland Sea	164.5	136.9	137.7	139.7	122.1	112.3	103.3	112.9	100.7	98.9	112.4	114.9	113.1	113.9	105.4	106.8	107.6	116.8	128.0	137.4	149.1	152.5	155.5	146.1	137.4	131.5	140.2	133.1	128.0	127.4	-9999.0
142	Norwegian Sea	232.2	224.0	209.7	204.8	222.8	238.2	225.0	221.8	234.0	215.8	204.9	198.6	207.1	216.8	213.8	220.3	211.6	219.9	230.8	224.0	223.6	228.9	228.1	224.1	225.3	230.0	239.7	233.3	216.1	215.5	-9999.0
144	Barents Sea	206.3	206.2	198.3	186.4	174.3	178.3	184.5	197.0	199.8	207.3	199.6	197.2	192.7	188.1	203.3	216.9	221.7	232.9	224.5	230.7	238.6	242.1	239.4	229.3	211.8	210.4	221.2	230.6	231.6	229.8	-9999.0
146	Kara Sea	188.7	186.9	189.8	199.4	210.5	208.1	201.8	193.7	198.7	201.8	210.3	212.8	213.1	210.7	198.3	187.7	187.0	187.8	187.4	186.8	195.6	202.2	204.6	210.2	213.7	211.3	205.9	200.8	207.5	215.4	-9999.0
148	Laptev Sea	156.1	163.6	167.8	169.8	173.1	182.9	184.1	171.7	166.0	163.0	166.7	183.1	199.6	197.6	197.2	187.2	179.3	176.5	177.2	174.7	174.5	177.8	181.2	183.3	189.0	192.6	186.6	187.6	185.1	187.9	-9999.0
150	East Siberian Sea	142.3	143.4	143.7	142.4	143.0	146.3	151.0	152.4	151.4	156.9	160.3	160.2	162.2	166.4	167.9	175.6	179.2	175.3	175.7	178.4	175.9	179.1	194.0	195.8	188.5	188.2	189.0	189.0	192.8	196.6	-9999.0
152	Gulf of Alaska	213.9	197.1	182.0	180.0	195.8	193.4	178.3	172.6	186.2	201.2	208.5	201.6	197.0	205.2	218.0	211.3	226.2	233.2	226.6	225.3	217.9	206.4	215.0	209.9	201.5	197.5	200.6	206.6	205.2	218.3	-9999.0
154	Southeast Bering Sea	205.5	171.6	188.8	202.3	207.9	186.4	163.6	188.5	205.0	210.1	208.0	195.3	180.7	186.8	191.2	216.8	231.1	238.0	233.2	226.5	220.5	216.4	210.4	194.9	196.3	197.4	196.5	198.4	214.0	222.1	-9999.0