_id	Name	Data type	Data Format	Length Byte	Description	Example
1	station	string	xxxxx	256	""	Bangna
2	country	string	xxxxx	256	""	thailand
3	instrument	string	xxxxx	256	""	pyranometer
4	mouth year	int	xxxx	4	""	1981.0
5	year	int	xxxx	4	""	1981.0
6	jan	int	xx	2	""	15.0
7	feb	int	xx	2	""	16.0
8	mar	int	xx	2	""	20.0
9	apr	int	xx	2	""	19.0
10	may	int	xx	2	""	16.0
11	jun	int	xx	2	""	15.0
12	jul 	int	xx	2	""	15.0
13	aug	int	xx	2	""	13.0
14	sep	int	xx	2	""	13.0
15	oct	int	xx	2	""	14.0
16	nov	int	xx	2	""	12.0
17	dec	int	xx	2	""	17.0
18	avg	float	xx.xxxxx	8	""	16.0
19	max	float	xx.xxxxx	8	""	20.0
20	min	float	xx.xxxxx	8	""	20.0