Data structure:

year	doy	hour	Tair	Tsoil	RH	VPD	Rain	WS	PAR	CO2
2001	1	1	1.1	4.049	88	79.402	0	0.604438722	0	371.14
2001	1	2	1.1	4.049	88	79.402	0	0.608916442	0	371.14


Required meteorological variables:

Short Name	Description	Unit
Tair	air temperature	degC
Tsoil	soil temperature	degC
RH	relative humanity	%
VPD	vapor pressure deficit	Pa
Rain	precipitation	mm
WS	wind speed	m s-1
PAR	photosynthetically Active Radiation	umol m-2 s-1
CO2	carbon dioxide	ppm