1958 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	93.3	96.1	98.7	101.7	104.4	107.1	110.2	113.3	116.5	119.5	122.8	126.2	129.7	132.9	136.4	139.5	143.0	146.9	149.5	153.3	156.6	160.0	163.4	167.0	171.5	175.2	178.3	181.3	185.0	188.6	-9999.0
34	Hudson Bay	138.0	140.2	140.7	143.7	147.0	149.0	153.4	156.8	161.2	164.1	166.6	169.4	172.2	176.1	179.4	181.9	185.6	188.9	190.5	193.8	198.9	202.3	205.3	207.4	211.2	215.5	218.2	219.9	223.3	227.0	-9999.0
36	Hudson Strait	118.2	122.4	125.6	124.0	127.5	132.0	133.6	136.0	137.6	142.2	145.1	148.2	154.0	152.6	159.7	161.9	165.5	168.7	171.9	175.6	175.4	181.5	187.9	191.2	192.8	197.6	201.1	203.5	206.2	208.9	-9999.0
98	Bering Strait	78.8	83.6	87.4	88.8	92.2	93.7	98.5	102.5	106.6	110.0	113.5	114.2	116.7	119.4	127.3	128.9	133.4	139.6	138.5	141.0	142.9	146.0	150.9	156.6	161.0	163.1	166.8	169.8	176.1	178.2	-9999.0
128	Arctic subocean	4.4	4.9	5.7	6.9	8.4	10.0	11.5	13.1	15.1	16.7	19.0	21.1	23.3	26.6	29.4	32.2	35.2	38.7	43.5	47.0	50.3	53.7	56.5	61.4	65.5	68.9	73.7	78.2	84.5	88.4	-9999.0
130	Chukchi Sea	62.5	66.9	71.3	72.5	74.4	75.8	81.0	84.4	90.4	94.1	94.6	96.7	100.8	107.2	109.0	110.9	118.7	119.5	118.5	122.8	127.2	129.6	139.2	146.2	149.7	147.5	151.0	151.8	159.5	161.6	-9999.0
132	Beaufort Sea	92.1	94.3	99.5	103.6	105.1	110.7	112.7	118.1	119.9	122.5	126.7	132.3	131.7	134.1	138.8	144.1	146.0	151.5	154.6	157.1	158.2	159.8	162.1	166.6	171.2	175.9	175.8	181.3	186.9	191.7	-9999.0
134	Arctic Archipelago	49.7	50.1	52.1	56.6	59.6	62.2	66.6	68.0	71.1	74.9	76.4	78.8	85.1	88.3	90.1	94.2	97.7	101.4	106.0	110.7	113.6	117.2	119.1	122.8	127.9	129.1	133.5	135.5	142.9	145.5	-9999.0
136	Foxe Basin	67.3	71.7	71.1	70.3	77.1	77.1	81.1	84.4	84.7	88.8	93.6	94.5	96.3	100.6	103.6	109.6	112.7	117.3	119.5	124.2	125.3	135.0	137.9	143.4	151.1	145.8	151.7	152.3	158.8	164.5	-9999.0
138	Baffin Bay	20.5	21.9	23.3	25.2	27.7	30.7	32.6	35.3	37.6	39.4	42.7	46.0	47.6	50.2	53.8	56.7	60.3	64.6	69.9	72.9	75.5	79.8	84.9	89.1	92.6	97.0	100.5	104.9	107.7	116.3	-9999.0
139	South Greenland	65.7	68.9	71.9	74.9	76.2	80.2	84.3	86.3	88.5	89.6	93.2	98.8	103.0	105.1	107.3	108.9	113.0	116.5	122.7	129.6	127.7	130.9	137.3	140.8	147.3	154.6	156.7	161.0	161.3	166.4	-9999.0
140	Greenland Sea	16.5	17.5	19.6	22.1	24.4	26.9	29.7	31.8	33.8	36.1	39.4	43.0	45.7	49.3	51.1	53.5	56.6	60.9	66.1	71.0	71.5	73.6	78.1	83.2	85.6	91.0	95.3	100.8	104.9	110.2	-9999.0
142	Norwegian Sea	80.6	82.4	85.3	89.3	92.8	96.8	97.3	99.3	104.3	109.1	108.6	109.7	116.8	123.9	123.2	134.6	129.5	130.2	133.3	136.8	140.4	146.3	152.5	150.0	152.5	157.6	165.0	169.5	173.9	179.6	-9999.0
144	Barents Sea	78.2	81.8	84.3	86.5	88.1	89.6	93.4	97.6	101.4	103.6	108.8	113.6	113.1	116.4	123.3	127.0	128.4	135.1	138.9	141.1	143.9	142.6	149.4	158.8	161.1	162.2	165.6	166.5	169.9	173.5	-9999.0
146	Kara Sea	114.8	118.0	120.8	123.9	126.1	128.3	130.0	132.9	137.6	140.8	143.5	146.9	152.6	155.7	156.6	159.9	164.0	167.1	168.9	174.7	178.5	182.8	185.0	186.8	192.5	196.1	198.0	201.1	203.6	205.9	-9999.0
148	Laptev Sea	86.4	89.3	92.6	96.4	100.0	103.6	106.6	108.3	109.1	113.8	118.6	121.6	124.7	129.2	134.0	136.6	139.7	144.2	146.7	147.0	153.8	156.3	158.8	162.9	167.4	172.3	177.8	180.5	184.0	187.9	-9999.0
150	East Siberian Sea	72.0	73.7	75.4	78.2	81.6	85.2	89.0	93.7	96.5	95.8	98.8	104.1	108.9	110.7	115.0	119.0	122.0	123.7	127.3	134.0	136.4	143.1	147.4	150.3	151.9	156.8	160.0	165.1	168.8	172.9	-9999.0
152	Gulf of Alaska	100.7	107.0	111.8	113.0	116.7	117.7	122.0	124.9	128.3	134.5	138.7	137.2	138.5	140.1	151.0	153.2	156.4	163.3	165.1	165.1	164.2	166.7	169.7	176.3	181.7	184.8	189.0	192.6	197.0	200.4	-9999.0
154	Southeast Bering Sea	101.6	107.2	109.1	111.1	114.7	115.0	120.7	124.5	127.2	133.7	133.2	133.4	136.7	141.0	148.6	151.0	151.9	161.5	159.6	159.8	161.7	165.6	169.6	176.0	184.2	182.3	188.7	187.1	192.7	197.0	-9999.0