1975 09 - 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	272.4	276.7	275.7	272.5	272.6	272.0	274.1	270.7	269.2	266.9	266.8	268.1	266.0	265.8	262.4	261.1	259.4	260.1	257.6	255.8	253.9	253.2	250.4	249.6	250.5	253.7	250.3	250.3	249.8	249.3	-9999.0
34	Hudson Bay	293.9	295.5	302.1	292.7	287.0	285.5	271.2	275.6	282.2	290.8	271.1	255.9	264.5	286.0	280.2	275.5	292.8	298.0	291.6	286.1	280.0	282.0	266.8	269.1	268.5	282.9	278.1	275.5	283.8	264.1	-9999.0
36	Hudson Strait	310.1	302.4	281.8	288.2	307.5	307.4	280.8	254.4	258.3	273.9	264.1	290.5	279.8	273.1	256.7	259.1	275.1	282.2	298.7	263.2	242.0	279.3	295.7	274.7	255.4	231.9	260.6	266.6	228.1	242.3	-9999.0
98	Bering Strait	279.0	270.3	273.6	279.9	269.5	274.2	267.2	247.6	240.6	253.1	279.2	279.5	267.1	265.0	255.2	255.7	246.2	281.5	263.4	253.8	261.0	242.3	244.1	242.2	238.2	231.8	222.4	220.0	233.6	244.2	-9999.0
128	Arctic subocean	204.3	207.6	199.4	194.0	185.7	195.4	191.2	198.0	203.3	194.1	191.4	207.4	217.7	210.6	188.4	186.8	182.2	193.5	193.3	206.2	197.8	198.1	180.3	172.7	164.9	166.9	166.9	177.1	186.3	205.9	-9999.0
130	Chukchi Sea	244.3	245.0	265.1	270.1	250.1	228.7	233.9	235.4	245.4	256.2	242.4	263.2	288.6	284.8	272.6	262.4	226.5	235.8	241.4	206.6	230.3	255.0	238.1	205.3	203.6	208.3	201.5	194.0	197.3	218.6	-9999.0
132	Beaufort Sea	274.6	286.1	276.4	278.1	282.8	278.0	294.3	279.4	259.7	245.7	259.9	291.2	292.0	281.4	283.3	293.1	274.3	267.1	279.6	268.1	270.4	268.8	274.8	259.4	271.5	260.0	249.1	256.6	237.8	258.4	-9999.0
134	Arctic Archipelago	250.2	242.5	235.2	234.2	259.0	266.7	268.2	260.3	249.4	231.6	226.6	228.3	251.6	242.5	238.7	228.3	222.5	222.8	263.9	282.1	248.4	225.8	237.7	217.7	207.4	211.4	196.1	187.0	183.8	185.0	-9999.0
136	Foxe Basin	265.0	248.2	259.5	265.0	229.7	240.1	255.6	268.4	275.6	300.4	286.6	259.4	249.5	240.7	250.4	228.9	221.2	215.2	215.9	212.7	246.1	272.6	232.7	242.2	247.4	232.5	251.4	241.0	236.9	228.9	-9999.0
138	Baffin Bay	227.4	239.0	207.9	186.5	181.3	193.2	191.4	212.3	195.4	196.5	220.7	223.1	208.1	195.4	202.8	187.3	162.3	156.9	147.3	165.4	179.3	181.7	185.6	186.5	174.5	175.0	176.4	171.8	157.9	158.3	-9999.0
139	South Greenland	220.8	247.2	222.5	210.9	218.1	215.0	214.5	197.9	203.1	195.1	187.8	192.2	207.3	232.4	208.4	189.1	173.5	163.7	154.4	144.5	145.8	162.6	161.5	176.3	187.5	182.3	170.2	165.9	180.5	170.8	-9999.0
140	Greenland Sea	189.3	208.7	197.8	184.7	167.4	154.1	145.0	152.3	171.4	177.0	167.5	181.5	192.6	165.6	174.3	182.0	187.9	174.3	161.5	147.2	141.1	143.3	142.2	157.1	165.4	185.8	161.5	164.6	152.3	173.5	-9999.0
142	Norwegian Sea	311.2	309.6	314.3	283.0	293.4	262.5	265.2	299.5	314.3	299.5	293.3	289.9	324.3	322.5	308.1	303.9	316.1	304.9	269.3	298.1	295.1	278.7	297.2	271.3	281.7	308.9	280.8	271.0	272.0	305.6	-9999.0
144	Barents Sea	293.6	311.3	301.9	313.9	310.8	291.4	306.1	305.7	287.9	291.7	293.0	296.6	303.0	306.4	313.9	322.6	306.9	286.0	305.3	282.2	277.9	283.8	289.7	296.4	281.7	282.1	298.4	302.5	299.5	271.2	-9999.0
146	Kara Sea	286.4	287.2	293.1	288.6	289.1	294.7	303.5	301.3	299.9	291.1	289.9	287.6	283.9	286.6	283.4	278.1	280.4	280.8	277.3	286.8	284.9	273.5	267.2	264.6	268.7	279.2	272.1	271.4	273.2	277.6	-9999.0
148	Laptev Sea	259.8	262.8	266.5	272.3	276.7	277.6	282.8	273.8	276.1	268.9	270.6	271.8	258.4	246.5	245.4	250.9	249.3	248.7	232.8	226.1	232.0	242.9	244.2	251.9	249.9	247.7	256.7	262.8	263.5	252.6	-9999.0
150	East Siberian Sea	270.3	283.3	282.2	259.4	248.9	228.8	234.2	250.9	258.9	256.5	270.9	273.0	242.3	227.2	222.0	230.6	225.2	237.3	236.3	234.3	225.4	229.8	229.0	236.4	242.2	237.7	234.2	231.4	219.4	233.3	-9999.0
152	Gulf of Alaska	286.4	280.9	281.9	280.3	280.5	305.5	275.7	265.9	274.9	306.5	310.4	292.5	275.3	268.7	267.7	265.0	284.4	307.2	282.5	295.1	290.7	294.8	263.3	264.2	283.0	296.5	270.6	263.1	286.0	292.7	-9999.0
154	Southeast Bering Sea	300.5	297.7	292.9	293.3	313.6	302.5	274.4	255.9	255.4	306.9	294.8	273.6	261.5	283.8	291.8	304.8	331.6	311.5	285.1	306.0	289.6	272.6	275.2	258.9	260.3	270.3	280.3	275.3	266.9	279.9	-9999.0