Table 1 Daily Solar radiation, clearness...

Table 1

Daily Solar radiation, clearness index, wind speed, temperature, and monthly flow rate in Nakhon Ratchasima

Month	Daily solar radiation (kWh/ $m^{2}$ /day)	Clearness index	Wind speed (m/s)	Temperature (^OC)	Monthly flow rate (L/s)
January	5.11	0.622	3.41	24.61	72,900
February	5.44	0.6	3.1	26.12	66,500
March	5.66	0.566	3.1	26.67	76,800
April	5.81	0.55	2.81	26.76	75,400
May	5.28	0.493	2.45	26.85	61,600
June	4.98	0.493	3	26.43	69,000
July	4.84	0.455	2.91	26.09	69,700
August	4.66	0.442	2.97	26.01	73,400
September	4.63	0.458	2.09	25.71	71,600
October	4.53	0.489	3.01	24.81	68,600
November	4.62	0.553	3.36	23.54	70,900
December	4.77	0.603	3.66	22.99	72,200

Month	Daily solar radiation (kWh/ $m^{2}$ /day)	Clearness index	Wind speed (m/s)	Temperature (^OC)	Monthly flow rate(L/s)
January	5.11	0.622	3.41	24.61	72,900
February	5.44	0.6	3.1	26.12	66,500
March	5.66	0.566	3.1	26.67	76,800
April	5.81	0.55	2.81	26.76	75,400
May	5.28	0.493	2.45	26.85	61,600
June	4.98	0.493	3	26.43	69,000
July	4.84	0.455	2.91	26.09	69,700
August	4.66	0.442	2.97	26.01	73,400
September	4.63	0.458	2.09	25.71	71,600
October	4.53	0.489	3.01	24.81	68,600
November	4.62	0.553	3.36	23.54	70,900
December	4.77	0.603	3.66	22.99	72,200

Source(s): Electricity Generating Authority of Thailand (2016a), US Department of Energy's National Renewable Energy Laboratory (2025)

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