1981 09 - daily  - mean of NCEP mean Daily Clear Sky Downward Solar 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	94.8	97.7	100.3	102.4	105.0	108.4	111.7	114.8	117.5	120.3	123.3	126.5	130.0	133.6	136.7	139.5	142.9	146.5	149.8	153.1	156.1	159.5	163.6	167.8	171.5	175.7	179.8	183.2	186.8	190.6	-9999.0
34	Hudson Bay	135.4	140.2	143.9	148.0	150.4	153.7	157.0	158.7	161.3	163.7	164.7	166.8	170.4	174.7	180.2	183.8	186.1	189.1	190.8	192.6	196.4	198.4	202.8	208.7	211.9	215.1	218.5	222.3	226.4	229.8	-9999.0
36	Hudson Strait	116.5	117.9	121.1	125.1	128.8	132.2	135.5	138.6	141.6	146.3	148.3	148.4	150.4	154.9	157.7	162.7	166.3	170.6	175.0	175.7	181.4	185.5	185.1	195.0	195.8	198.4	200.6	202.9	209.8	216.4	-9999.0
98	Bering Strait	83.8	84.4	87.1	89.9	92.8	96.3	99.8	102.2	104.2	107.6	112.5	116.5	119.2	120.4	122.1	125.4	128.6	132.6	136.7	139.2	142.6	146.4	150.7	157.5	163.2	165.6	167.7	169.0	171.3	174.6	-9999.0
128	Arctic subocean	4.7	5.4	6.5	7.5	8.6	10.1	11.7	13.7	15.9	17.9	20.2	23.1	26.2	28.9	31.3	34.3	37.6	41.4	44.9	48.3	52.3	56.6	60.2	63.2	67.7	71.9	76.5	81.8	86.6	90.8	-9999.0
130	Chukchi Sea	64.9	66.9	68.3	71.8	74.8	78.0	83.9	85.7	88.6	94.7	99.1	98.4	98.3	101.2	103.9	107.4	112.8	117.8	119.3	122.3	124.8	129.1	137.8	147.5	149.0	149.0	149.5	152.5	155.3	158.2	-9999.0
132	Beaufort Sea	98.0	100.7	103.2	105.3	107.5	109.9	111.7	114.7	116.8	119.2	124.3	128.2	133.1	136.6	138.2	139.3	142.0	145.9	150.6	154.7	156.4	160.3	165.1	167.8	173.5	179.2	183.1	184.4	185.1	187.8	-9999.0
134	Arctic Archipelago	49.9	52.5	55.4	57.9	59.4	62.8	64.1	67.9	73.2	74.1	75.3	80.6	83.0	88.8	92.3	95.0	100.8	100.2	104.6	112.0	113.9	116.0	122.9	123.2	127.9	137.5	142.2	143.7	146.7	151.7	-9999.0
136	Foxe Basin	65.9	64.5	67.9	71.2	74.8	77.4	80.9	85.6	89.5	94.4	96.3	93.9	100.6	99.9	105.1	113.6	117.9	124.6	119.3	128.6	137.4	136.8	140.2	149.2	148.7	152.4	156.1	163.2	169.1	172.2	-9999.0
138	Baffin Bay	21.1	22.5	24.3	25.9	27.5	30.4	33.4	36.5	39.6	42.7	45.9	47.9	50.8	53.6	54.9	59.0	65.4	69.2	73.2	76.4	80.2	84.7	87.4	91.1	94.8	99.0	103.5	109.4	115.6	120.4	-9999.0
139	South Greenland	70.5	71.4	72.4	73.6	77.7	80.7	83.7	86.8	90.0	93.7	98.3	103.1	104.7	108.1	108.8	110.8	113.8	118.4	126.0	130.4	132.1	137.0	140.2	144.6	148.7	153.3	157.5	161.3	166.3	172.1	-9999.0
140	Greenland Sea	17.4	19.9	22.1	24.1	25.7	26.8	30.2	33.8	36.7	38.9	41.8	45.4	48.4	51.5	54.3	54.6	59.7	63.7	67.1	72.9	76.4	78.1	80.7	84.9	89.0	93.6	98.2	102.5	108.3	111.8	-9999.0
142	Norwegian Sea	80.4	80.0	82.1	90.8	93.0	95.2	97.6	102.7	105.2	106.6	109.6	117.4	120.9	123.7	125.5	128.1	133.5	135.7	142.2	141.9	143.8	145.9	150.3	152.5	158.1	163.2	166.9	169.9	170.1	176.9	-9999.0
144	Barents Sea	81.3	85.5	86.0	86.3	88.5	93.4	98.7	101.6	102.9	108.4	110.6	110.4	115.9	120.4	125.5	125.7	130.4	134.9	133.4	136.8	143.7	150.5	153.7	158.4	158.7	160.0	164.2	169.9	174.6	179.3	-9999.0
146	Kara Sea	115.8	118.9	120.8	122.3	125.3	129.6	133.9	137.7	140.1	142.1	145.5	149.2	152.6	156.4	159.7	162.4	165.1	168.7	172.2	176.0	178.0	181.0	185.6	189.5	193.1	196.9	201.1	204.1	207.1	210.5	-9999.0
148	Laptev Sea	88.7	92.0	95.3	96.7	98.9	101.7	103.9	107.3	111.4	115.0	118.3	121.4	124.9	128.2	130.7	134.7	138.9	142.5	145.9	147.7	151.2	154.3	156.9	160.6	163.9	168.2	173.8	179.3	183.4	186.9	-9999.0
150	East Siberian Sea	71.2	75.4	79.3	82.7	85.6	89.1	92.4	94.0	96.1	97.8	99.0	101.9	106.3	110.9	114.8	117.1	118.9	121.9	125.4	129.8	131.3	136.6	142.3	144.7	147.8	155.0	161.2	162.6	166.0	172.1	-9999.0
152	Gulf of Alaska	108.2	108.8	111.7	113.9	115.2	117.5	121.2	124.2	126.8	130.8	133.2	140.3	145.7	144.8	144.8	147.6	150.9	156.3	159.6	162.7	166.9	170.0	171.6	176.1	183.6	188.8	189.6	190.2	193.3	194.8	-9999.0
154	Southeast Bering Sea	104.0	107.3	108.9	111.2	114.1	119.6	122.8	123.5	127.3	129.5	132.4	140.0	140.7	141.3	144.2	146.7	150.7	157.1	162.1	163.7	165.1	166.6	171.0	178.4	185.9	187.7	186.8	187.7	192.4	194.6	-9999.0