1957 02 - 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	137.6	141.3	141.6	138.7	138.9	138.6	138.5	139.5	140.7	142.3	145.0	147.3	149.5	151.7	151.5	151.6	152.7	151.7	152.2	151.2	147.1	144.3	145.6	146.4	146.2	146.5	147.9	149.8	-9999.0	-9999.0	-9999.0
34	Hudson Bay	126.4	139.8	151.3	145.7	139.9	146.4	141.8	145.4	153.9	151.8	165.1	175.4	169.4	177.1	175.7	167.0	168.4	156.8	154.5	153.4	145.1	136.4	132.5	158.3	173.6	159.9	168.2	175.3	-9999.0	-9999.0	-9999.0
36	Hudson Strait	115.7	115.4	130.0	140.0	129.2	125.4	128.9	126.9	121.5	122.5	109.2	121.1	145.9	163.2	174.3	168.1	164.8	178.5	192.1	177.8	174.4	171.7	159.6	120.9	114.5	147.1	134.8	124.4	-9999.0	-9999.0	-9999.0
98	Bering Strait	191.4	202.5	192.3	178.0	189.8	182.7	173.6	148.4	129.2	125.7	118.7	119.9	129.7	117.5	137.4	131.0	145.3	159.9	187.2	196.0	185.7	173.0	174.5	133.0	126.2	138.8	134.9	157.7	-9999.0	-9999.0	-9999.0
128	Arctic subocean	137.8	133.1	139.1	126.6	123.1	127.2	125.5	117.8	117.4	113.8	118.4	123.2	128.0	115.7	118.4	128.7	124.9	121.1	121.9	112.7	108.1	109.5	105.1	112.3	110.0	118.6	126.0	124.6	-9999.0	-9999.0	-9999.0
130	Chukchi Sea	190.9	211.2	199.2	210.5	198.6	183.6	162.4	131.7	119.6	118.1	115.2	111.0	99.8	94.4	99.7	104.8	115.2	141.2	196.8	216.1	212.9	197.8	172.3	125.7	120.2	115.8	112.4	122.7	-9999.0	-9999.0	-9999.0
132	Beaufort Sea	161.7	172.8	155.4	139.3	143.6	138.0	141.1	146.8	142.8	150.6	145.1	133.9	152.3	161.9	147.5	166.9	149.4	143.4	141.7	138.2	118.0	114.6	113.3	119.0	121.4	149.5	163.0	160.9	-9999.0	-9999.0	-9999.0
134	Arctic Archipelago	143.4	137.3	121.6	112.7	113.3	113.1	114.3	109.9	109.3	117.8	121.7	120.6	118.6	129.6	136.6	138.4	140.5	136.5	117.0	104.6	103.6	112.5	125.3	129.0	125.9	122.8	125.4	125.4	-9999.0	-9999.0	-9999.0
136	Foxe Basin	114.5	111.1	114.1	120.4	118.5	110.4	104.9	108.4	111.7	123.9	126.2	121.3	138.2	158.0	160.1	166.7	166.4	159.2	158.5	153.7	158.9	161.4	157.6	138.2	128.0	123.9	134.4	145.5	-9999.0	-9999.0	-9999.0
138	Baffin Bay	121.0	116.9	117.8	120.3	125.0	121.5	114.1	120.4	126.5	127.2	129.3	134.9	128.1	110.7	127.7	129.8	129.2	120.6	120.7	118.3	118.5	113.6	111.6	114.6	115.4	114.6	114.2	112.9	-9999.0	-9999.0	-9999.0
139	South Greenland	127.3	124.2	128.5	138.5	127.3	126.9	128.7	139.7	132.1	126.4	128.4	129.5	128.7	128.2	125.6	132.4	126.2	119.5	111.7	114.0	116.6	120.5	139.8	145.7	131.5	119.3	127.0	133.2	-9999.0	-9999.0	-9999.0
140	Greenland Sea	132.9	141.8	137.9	127.9	129.7	124.7	121.0	114.7	127.2	132.4	120.2	117.1	113.8	108.9	97.5	110.9	110.6	103.4	101.6	97.8	95.4	94.7	86.4	91.8	96.9	106.0	118.3	115.4	-9999.0	-9999.0	-9999.0
142	Norwegian Sea	213.5	213.3	218.0	223.6	225.9	220.0	207.5	200.6	202.3	197.6	189.0	188.2	188.7	186.0	191.9	203.0	205.5	203.5	204.6	201.3	199.7	191.8	186.5	190.1	195.4	201.3	201.3	208.9	-9999.0	-9999.0	-9999.0
144	Barents Sea	185.9	194.8	196.0	195.4	194.0	199.5	196.7	194.9	190.7	185.3	179.9	175.1	176.3	175.0	184.4	199.4	207.5	209.5	205.1	206.0	206.8	196.9	187.1	179.9	177.8	173.6	175.3	177.3	-9999.0	-9999.0	-9999.0
146	Kara Sea	125.8	123.1	123.9	128.2	132.6	134.2	138.6	144.3	151.9	159.2	165.7	169.3	168.7	171.6	168.3	165.0	165.1	164.7	165.4	166.6	164.3	161.4	160.1	158.4	156.4	154.9	151.7	147.3	-9999.0	-9999.0	-9999.0
148	Laptev Sea	116.8	120.6	119.9	117.0	115.4	111.2	111.9	115.6	117.8	118.6	120.7	124.3	129.1	132.0	130.7	128.2	129.1	129.3	126.3	124.5	122.3	122.8	132.1	139.1	136.8	136.5	137.5	141.2	-9999.0	-9999.0	-9999.0
150	East Siberian Sea	125.2	127.2	145.5	129.0	124.8	125.2	126.1	123.1	119.3	116.8	123.0	128.6	127.3	125.2	115.4	109.4	117.6	126.4	135.2	130.3	137.7	147.9	162.8	167.6	166.3	158.4	145.4	129.3	-9999.0	-9999.0	-9999.0
152	Gulf of Alaska	194.0	206.7	202.1	185.1	193.8	201.2	202.5	187.9	170.9	161.7	150.7	156.1	179.4	161.4	194.0	173.0	203.1	197.7	203.9	207.4	199.9	177.8	178.9	153.9	162.7	170.4	165.1	210.4	-9999.0	-9999.0	-9999.0
154	Southeast Bering Sea	210.7	218.2	215.6	225.8	223.6	225.0	217.3	191.4	176.7	135.2	136.5	140.0	138.2	136.7	151.0	149.2	202.6	230.7	234.3	222.5	214.8	209.7	203.4	158.5	135.1	138.7	141.7	197.3	-9999.0	-9999.0	-9999.0