1. Check station location
	Copy station_info file
	Use Arc Commands
	generate station
	Generate: points
	ID,X,Y,{Angle},{Scale}: &r station_info
	ID,X,Y,{Angle},{Scale}: END
	Generate: quit
	
	Use ArcCatalog 	define the projection Geographic GCS_Sphere_ARC_INFO
	
2. Check Input Interpolate results
	Copy or move \ATM_INPUT_DATA\Interpolate\*.asc
	Copy or move \ATM_INPUT_DATA\ETPATH\*.asc
	asciigrid xxx.asc yyy float

3. Check Input wsdem and wsdemirr
	wsdem is Dem map which does NOT include dissipative area		
	wsdemirr is DEM map which includes dissipative area
	open wsdem.asc, wsdemirr.asc, (and frac.asc, fracirr.asc), paste to EXCEL
	Text to columns
	
4. Get the EF from observation data
EF: see reference
J.S. Kimball et al / Agricultural and Forest Meteorology 85 (1997) 87-98
EF = lEp,day / lp,ann

EP calculated from FAO-Penman eqn (Interpolation way: IDW way)
P (Interpolation way: IDW way)
Arc:	
	asciigrid PRECavyIDW.asc Prec float
	Precm = Prec / 1000.
	gridascii Precm Precm.asc