OIS | WMO

TABLE B3

Instructions for the proper application of the data type designators

(1)	The designators specified in this table should be used to the greatest extent possible to indicate the type of data contained within the body of the BUFR bulletin.
(2)	Where more than one data type is contained in the bulletin, the designators for only one of the data types should be used.
(3)	When the table does not contain a suitable designator for the data type, an alphabetic designator which is not assigned in the table should be introduced and the WMO secretariat notified.

T1	T2	T2 - Data Type
I or J	N	Satellite data
I or J	O	Oceanographic/limnographic (water properties)
I or J	P	Pictorial
I or J	S	Surface/sea level
I or J	T	Text (plain language information)
I or J	U	Upper air
I or J	X	Other data types