1977 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	275.6	272.1	271.7	271.2	272.5	274.6	274.8	274.2	274.6	269.5	268.4	270.0	268.3	266.4	266.6	266.9	266.6	266.3	258.7	265.1	267.0	263.2	257.3	257.1	255.2	255.7	251.4	250.3	250.2	249.2	-9999.0
34	Hudson Bay	304.3	289.7	293.3	293.5	289.9	287.7	285.8	300.4	302.2	291.0	280.5	281.2	288.6	289.7	298.4	299.0	296.1	285.2	269.2	279.3	284.6	291.3	285.6	288.4	297.6	292.6	281.8	268.5	262.6	269.5	-9999.0
36	Hudson Strait	310.8	265.4	259.1	262.9	253.0	266.3	281.6	253.4	260.1	273.9	239.2	233.1	237.6	247.9	249.5	241.4	257.9	240.4	229.0	238.0	250.2	259.5	242.6	257.9	261.6	245.9	229.4	242.3	235.8	241.4	-9999.0
98	Bering Strait	281.3	279.9	268.2	270.8	267.6	278.3	285.3	283.4	271.6	272.8	305.5	295.5	282.2	277.4	275.2	283.9	279.3	277.0	268.1	260.2	276.6	282.8	262.3	263.5	256.3	249.4	245.8	274.3	276.0	255.5	-9999.0
128	Arctic subocean	224.0	212.5	212.1	202.3	197.7	202.9	201.6	198.1	198.7	202.3	195.6	179.4	178.6	170.7	178.6	197.3	183.9	187.2	180.9	192.9	199.4	197.4	202.7	209.5	211.0	194.8	174.1	181.8	197.2	190.5	-9999.0
130	Chukchi Sea	277.9	282.5	298.6	283.6	284.2	310.2	296.3	263.6	266.0	274.7	287.0	275.8	305.2	283.1	260.3	261.5	287.7	285.3	259.2	248.2	235.6	238.5	277.1	291.7	282.8	261.1	261.6	256.1	237.3	270.8	-9999.0
132	Beaufort Sea	266.5	258.8	264.2	261.5	265.4	276.4	285.8	281.4	287.2	270.7	275.1	296.0	287.4	270.9	272.0	267.6	267.8	273.2	279.0	297.9	292.8	284.1	282.8	279.4	277.8	279.2	266.1	257.3	281.4	274.1	-9999.0
134	Arctic Archipelago	259.9	259.1	243.6	250.1	240.2	225.3	224.0	236.3	254.9	257.6	239.5	232.4	206.0	191.6	200.7	226.2	241.2	258.4	249.1	244.5	259.3	273.0	250.0	231.8	231.2	253.3	247.7	232.4	244.3	254.4	-9999.0
136	Foxe Basin	225.5	241.7	254.6	269.0	251.9	263.9	246.6	231.8	244.0	243.7	262.4	252.0	257.2	235.2	230.9	224.5	209.1	225.5	246.3	246.9	258.9	272.4	292.8	235.6	217.9	219.8	254.6	250.4	265.4	240.4	-9999.0
138	Baffin Bay	180.4	195.4	209.0	200.7	210.2	209.0	204.9	199.8	208.8	206.5	195.2	187.8	195.6	202.5	180.6	176.2	187.3	214.9	202.4	196.3	205.0	182.5	189.3	200.5	179.8	169.6	175.4	173.6	182.9	171.8	-9999.0
139	South Greenland	185.5	175.4	173.0	179.0	175.5	186.3	194.9	190.9	196.1	179.4	179.1	200.1	182.5	185.0	215.7	263.6	271.4	263.3	225.6	225.2	201.2	192.1	179.5	164.4	186.1	216.8	200.3	186.9	191.6	190.8	-9999.0
140	Greenland Sea	153.8	149.2	151.2	148.1	140.6	157.1	158.8	159.7	157.3	159.8	154.6	155.0	149.7	153.3	153.2	166.2	204.5	230.1	186.2	164.7	164.9	172.0	148.9	157.2	152.8	186.8	198.9	216.9	209.7	192.6	-9999.0
142	Norwegian Sea	292.5	316.7	297.1	285.9	304.0	292.0	273.9	272.8	269.0	259.8	252.0	246.6	255.4	279.1	273.9	268.6	289.0	285.7	288.3	291.5	279.1	267.4	285.1	287.0	280.1	270.0	283.5	296.5	292.8	281.4	-9999.0
144	Barents Sea	320.8	299.7	307.3	329.0	320.3	319.8	314.9	299.5	277.2	286.1	309.1	296.6	286.0	293.7	290.1	304.0	284.6	280.9	256.4	249.6	264.0	262.4	264.0	260.5	246.4	255.8	266.2	273.4	265.7	264.4	-9999.0
146	Kara Sea	300.3	305.3	295.8	286.7	298.4	296.9	295.6	292.6	292.0	288.2	282.7	289.8	290.2	286.6	285.0	280.3	284.3	282.1	281.2	284.9	280.3	273.4	264.0	265.4	266.9	260.9	254.5	253.0	254.1	257.9	-9999.0
148	Laptev Sea	262.3	264.4	279.0	284.2	281.2	282.3	274.9	274.8	277.3	266.9	268.3	275.3	274.2	277.2	267.8	243.5	231.4	234.5	240.6	260.6	262.2	254.5	252.4	263.6	250.1	254.9	247.5	242.9	229.3	232.0	-9999.0
150	East Siberian Sea	278.8	266.8	262.2	262.5	263.4	258.3	275.7	292.7	284.3	275.9	274.3	248.7	263.3	259.0	263.1	275.1	266.3	258.1	245.1	259.8	272.2	261.3	269.2	249.7	243.2	236.9	244.8	273.1	282.5	264.6	-9999.0
152	Gulf of Alaska	269.6	272.2	257.6	257.1	260.9	285.0	295.7	274.7	280.7	303.2	318.1	289.6	264.0	295.9	273.8	302.3	286.4	281.0	271.9	270.6	309.2	296.9	261.0	251.7	241.3	241.6	277.0	303.7	281.5	239.6	-9999.0
154	Southeast Bering Sea	298.3	295.0	290.3	278.4	288.9	323.6	304.8	289.4	293.1	311.8	303.4	277.3	311.4	311.3	322.1	292.4	291.2	295.6	273.2	295.6	295.1	254.3	270.8	276.0	283.9	274.2	314.4	271.1	233.7	239.7	-9999.0