%OCTR;	centerID
%ODAY;	day
%ODSD;	decimalScaleD
%ODTY;	dataType
%OFTU;	forecastTimeUnit
%OGDS;	GDSorBMS
%OGEP;	generatingProcess
%OGID;	gridID
%OHR;	hour
%OLVI;	levelIndicator
%OLVL;	level
%OMIN;	minute
%OMIS;	numberMissing
%OMON;	month
%ONIA;	numberInAverage
%OPAR;	parameter
%OPRD;  period
%OPR1;	periodOne
%OPR2;	periodTwo
%OPRT;	parmTableVersion
%OSCN;	subCenterID
%OTRI;	timeRangeIndicator
%OYR;	year