Name	Notation	Description	Types	Status
WMO No. 306 Centres	centre		Register , Collection , Container	stable
Code Table D-1: Nil reasons	nil	Nil-reason terms are used to provide an explanation for recor...	Register , Collection , Container	stable
Observation and measurement types	observation-type		Collection , Container , Register	stable
Code Table D-2: Physical quantity kinds	quantity-kind	WMO No. 306 Vol I.3 Common Code-table D-2, Physical quantity ...	Container , Collection , Register	stable
Code Table C-6: List of units for TDCFs	unit	WMO No. 306 Vol I.2 Common Code-table C-6 List of units for T...	Register , Container , Collection	stable