1973 04 - daily  - mean of NCEP mean Daily Clear Sky Upward 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	122.5	131.4	133.6	135.8	138.3	140.8	142.9	142.3	139.3	141.3	143.7	145.9	148.5	148.7	145.7	148.9	151.7	153.9	155.9	158.2	158.8	156.8	156.0	157.9	159.4	160.9	163.2	164.3	163.6	162.1	-9999.0
34	Hudson Bay	126.5	152.8	155.1	156.5	159.2	162.7	166.3	168.5	154.2	154.6	156.6	157.2	158.9	155.9	147.7	159.8	159.6	161.5	159.9	160.3	152.5	140.5	149.6	151.6	152.9	153.9	155.6	154.5	154.5	137.8	-9999.0
36	Hudson Strait	150.3	151.8	154.3	154.9	155.8	155.8	157.4	159.9	164.0	167.6	170.1	170.5	178.2	177.1	179.9	183.4	182.2	184.8	187.8	191.7	193.4	193.2	167.8	168.2	168.8	170.6	174.6	165.4	133.1	199.8	-9999.0
98	Bering Strait	124.8	126.7	128.2	130.8	132.8	134.8	136.3	138.3	140.7	143.7	147.0	149.0	150.5	152.2	150.9	157.5	160.4	163.1	165.4	167.4	168.9	171.6	172.8	175.5	177.5	179.1	181.5	184.9	186.1	188.1	-9999.0
128	Arctic subocean	85.5	90.7	94.7	99.5	103.7	108.4	113.5	116.6	120.7	125.4	129.7	134.0	139.1	144.5	148.5	155.0	162.3	168.4	172.8	178.3	185.5	189.3	195.5	198.5	202.4	205.1	211.5	218.0	220.2	222.3	-9999.0
130	Chukchi Sea	124.0	127.3	130.9	132.5	133.4	135.4	137.3	141.0	144.0	146.5	150.2	152.7	154.2	156.7	158.6	164.9	169.2	173.1	174.5	176.4	177.8	180.9	185.2	189.1	191.9	193.9	196.2	197.9	200.1	202.2	-9999.0
132	Beaufort Sea	129.5	133.1	134.1	137.1	140.8	144.0	145.4	146.0	144.1	146.0	149.5	153.0	156.2	158.8	159.8	164.7	166.9	168.8	170.4	172.3	172.9	156.0	141.8	143.8	145.1	145.7	146.6	144.9	140.7	146.2	-9999.0
134	Arctic Archipelago	113.0	115.1	117.7	120.3	124.3	127.2	129.8	132.8	134.5	138.5	140.1	143.5	147.3	150.5	153.6	155.6	158.9	162.0	165.0	167.0	168.5	171.9	175.0	179.0	182.2	184.6	188.3	190.5	190.6	193.6	-9999.0
136	Foxe Basin	128.8	130.1	132.7	134.5	137.8	141.6	142.9	144.2	145.8	147.5	149.5	154.4	158.3	160.4	163.7	167.1	170.3	172.0	172.5	178.6	180.2	180.1	184.7	184.8	187.5	187.3	188.3	191.3	193.9	194.4	-9999.0
138	Baffin Bay	105.3	109.1	113.3	117.5	121.1	124.8	126.2	129.5	133.2	133.5	136.7	141.5	145.7	148.3	151.2	156.3	163.6	167.1	173.5	179.9	182.5	187.9	192.4	194.2	196.7	203.3	208.0	207.9	207.7	213.6	-9999.0
139	South Greenland	110.8	116.0	117.5	119.0	121.5	121.7	119.3	119.8	122.4	125.6	127.1	130.1	135.3	138.2	140.4	146.2	146.8	146.4	151.1	154.4	157.2	155.8	157.8	159.0	161.2	165.3	169.0	170.2	171.3	170.0	-9999.0
140	Greenland Sea	104.1	108.3	111.1	113.5	117.2	121.6	123.5	125.9	130.6	132.2	136.0	140.0	145.4	149.3	154.8	158.5	164.1	166.2	171.4	177.7	182.8	188.1	191.5	195.1	197.3	201.3	205.9	210.8	211.9	215.5	-9999.0
142	Norwegian Sea	54.0	75.1	76.9	78.4	79.1	80.3	82.0	83.5	84.8	86.4	87.8	89.2	89.9	89.3	85.3	92.1	93.9	95.0	96.4	97.6	99.0	99.0	101.4	103.5	104.0	106.9	108.4	109.5	110.4	110.7	-9999.0
144	Barents Sea	94.8	109.3	110.6	112.5	115.1	117.6	116.0	87.2	118.4	120.8	122.7	122.4	124.9	114.6	100.0	110.9	112.2	113.3	113.9	115.1	112.2	111.6	109.8	112.5	113.7	113.6	114.3	112.0	105.5	130.5	-9999.0
146	Kara Sea	129.4	140.3	142.4	144.1	146.1	148.4	151.5	149.7	135.4	137.0	139.2	141.4	143.1	142.8	134.7	130.8	135.6	138.5	140.8	143.3	145.5	145.8	141.1	142.4	142.7	143.6	146.4	149.2	149.3	137.4	-9999.0
148	Laptev Sea	127.0	130.3	133.2	136.1	138.5	140.9	142.9	145.1	147.1	150.0	152.7	154.9	157.3	159.2	161.3	163.3	165.9	168.3	170.6	173.0	175.3	177.2	178.8	180.4	182.6	183.8	184.9	186.3	188.4	189.3	-9999.0
150	East Siberian Sea	123.1	124.8	127.0	129.0	131.1	133.9	136.7	139.8	142.7	144.9	147.3	149.6	152.1	154.3	157.3	157.5	159.2	160.6	162.2	164.9	168.2	170.4	170.8	174.0	176.7	178.9	180.8	183.9	186.2	190.4	-9999.0
152	Gulf of Alaska	108.0	109.2	110.8	113.0	114.4	115.8	116.3	116.3	119.8	122.5	124.2	125.3	126.5	127.9	128.4	132.5	134.0	135.6	137.8	139.4	140.1	142.6	145.2	145.2	145.8	146.9	149.7	151.8	150.2	150.7	-9999.0
154	Southeast Bering Sea	116.3	118.4	121.0	123.1	122.4	122.8	125.2	125.1	127.6	129.9	131.4	131.6	133.4	134.2	125.9	139.7	141.6	145.3	148.7	150.5	152.5	152.8	154.5	157.4	160.0	164.0	165.9	166.7	159.7	165.4	-9999.0