1974 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	118.6	121.1	123.4	125.7	127.9	131.1	132.5	125.6	126.9	128.8	130.8	133.4	134.8	134.2	134.0	136.2	138.3	140.1	141.9	142.5	139.8	146.4	147.6	149.3	151.7	154.3	155.2	153.2	161.3	163.1	-9999.0
34	Hudson Bay	134.1	137.3	137.8	140.2	141.8	146.6	145.9	129.1	129.5	131.2	131.6	133.1	130.2	124.4	119.3	120.9	123.3	124.0	123.4	116.6	116.3	109.7	109.3	109.2	110.0	111.5	112.9	124.8	116.5	118.6	-9999.0
36	Hudson Strait	149.3	151.3	153.9	158.3	157.2	158.3	163.8	143.8	146.7	148.3	149.4	151.9	152.8	157.0	178.6	184.0	186.6	190.8	190.0	189.7	188.9	192.8	195.8	195.9	196.1	199.8	205.1	212.5	210.1	209.9	-9999.0
98	Bering Strait	125.7	128.8	130.4	131.7	133.5	135.2	137.2	138.6	141.0	143.4	146.0	148.4	149.9	151.4	155.7	157.8	159.9	162.4	165.0	167.8	170.3	173.0	173.0	175.1	179.0	180.2	180.7	173.4	185.0	188.6	-9999.0
128	Arctic subocean	85.0	88.8	94.3	97.3	101.1	105.5	111.2	116.0	120.1	124.9	128.9	133.6	139.4	143.9	151.2	158.1	162.0	164.4	171.1	179.3	184.5	188.2	193.5	199.7	205.4	208.1	212.9	217.2	220.1	221.4	-9999.0
130	Chukchi Sea	125.3	128.6	131.1	132.6	136.6	138.0	140.2	142.6	146.1	148.9	152.7	155.9	158.0	159.0	161.0	163.8	165.8	168.5	172.6	176.6	180.4	182.5	185.3	185.5	187.6	189.1	190.3	190.4	195.4	200.1	-9999.0
132	Beaufort Sea	134.3	137.4	140.4	142.1	144.1	145.1	144.8	118.1	119.3	120.9	122.2	125.2	126.5	123.4	122.9	126.5	127.4	129.8	132.4	133.2	131.5	133.4	134.2	135.4	137.3	140.5	135.6	129.4	146.8	148.6	-9999.0
134	Arctic Archipelago	113.6	116.2	118.6	121.2	124.2	128.0	130.6	131.5	134.3	136.4	139.9	144.5	145.6	148.2	152.0	156.5	159.3	163.0	167.5	168.8	169.2	172.8	176.1	180.4	185.7	189.9	190.6	193.4	194.7	196.0	-9999.0
136	Foxe Basin	124.8	127.0	132.3	134.3	136.5	137.7	138.4	139.4	141.5	145.0	148.6	153.5	158.5	159.9	166.0	168.8	170.5	172.0	171.3	173.8	176.7	178.6	183.1	184.6	186.5	195.2	199.5	200.8	202.0	205.2	-9999.0
138	Baffin Bay	102.7	106.6	111.3	114.5	119.8	123.2	126.9	127.0	127.3	132.2	136.2	140.9	147.5	153.3	158.0	159.4	160.6	163.7	169.4	175.5	180.7	182.4	186.6	191.1	195.4	198.0	203.3	204.7	207.3	210.6	-9999.0
139	South Greenland	113.8	115.6	119.3	121.5	125.9	127.3	127.2	128.2	131.1	134.1	136.9	140.0	140.8	143.3	144.0	145.4	149.2	149.3	150.4	153.6	156.6	161.0	162.9	162.9	167.9	171.2	172.6	172.4	176.9	178.8	-9999.0
140	Greenland Sea	100.5	104.1	106.8	110.8	115.6	119.0	123.6	127.7	128.8	131.9	137.0	141.0	144.0	150.5	156.0	156.8	161.5	164.6	166.4	171.4	178.2	183.1	185.9	187.0	193.3	200.4	204.0	210.4	207.8	211.9	-9999.0
142	Norwegian Sea	73.8	75.5	76.1	76.5	77.7	79.2	64.1	82.9	85.4	86.7	89.6	89.8	90.3	89.5	92.4	93.2	93.5	96.0	96.0	96.5	71.6	99.6	101.3	103.1	102.5	103.6	105.6	98.3	109.7	111.6	-9999.0
144	Barents Sea	87.3	89.1	91.8	94.2	95.6	98.2	96.1	89.3	92.3	95.5	97.0	100.1	100.6	101.9	110.7	112.2	113.5	115.2	117.4	120.5	119.8	106.0	107.4	108.6	108.8	109.5	109.6	102.6	107.1	109.5	-9999.0
146	Kara Sea	111.3	113.5	115.5	117.8	119.8	124.6	126.3	115.8	115.5	116.3	118.1	120.4	122.7	119.4	114.9	116.6	118.4	119.0	120.2	120.1	108.4	140.2	141.1	143.7	145.8	147.9	147.4	136.5	164.4	165.4	-9999.0
148	Laptev Sea	125.7	127.9	131.1	133.4	136.0	138.0	141.0	144.0	145.9	147.8	149.9	152.2	154.4	156.9	155.6	157.7	159.8	162.9	165.9	168.1	168.6	157.3	159.0	159.8	161.3	165.5	170.6	174.5	163.7	165.1	-9999.0
150	East Siberian Sea	118.8	121.3	123.8	125.5	127.1	130.1	133.2	135.8	139.1	142.4	144.7	147.4	150.0	152.4	155.6	158.5	161.1	163.3	165.4	168.0	169.8	171.8	173.3	176.8	179.3	180.8	183.2	184.7	183.7	185.8	-9999.0
152	Gulf of Alaska	108.7	111.5	112.0	112.8	113.8	115.0	117.8	118.8	120.1	121.1	123.1	124.9	124.9	126.9	129.8	130.9	133.5	135.9	137.3	138.4	138.0	142.0	140.6	142.7	146.8	149.0	145.8	137.9	152.5	154.6	-9999.0
154	Southeast Bering Sea	121.9	124.2	124.9	126.6	128.6	130.8	133.0	134.9	134.1	138.2	140.2	142.1	143.1	143.1	146.7	148.4	149.4	149.8	152.0	151.4	140.5	158.8	157.1	162.5	166.6	165.7	160.6	117.6	170.5	173.7	-9999.0