This section concerns subsurface profiling floats (also called Argo floats), expendable bathythermographs (XBT) and ship based instruments. Related alphanumeric codes are FM63 BATHY and FM64 TESAC.
BUFR template used for profiling float data is TM315003. GTS headers start with character string 'IOP'.
BUFR template used for XBT data is TM315004. GTS headers start with character string 'IOS'.
BUFR template used for ship based profiling instruments data is TM315007. GTS headers should also probably start with character string 'IOS' (information to be checked).