GRIB version number,BUFR version number,CREX version number,Effective date,Status
0,0,0,Experimental,Operational
,1,,1 January 1998,Operational
,2,1,1 January 1999,Operational
1,3,2,1 January 2000,Operational
2,4,3,1 January 2001,Operational
3,5,4,Pre-operational to be implemented by next amendment,Operational
4-254,6-254,5-254,Future versions,Operational
255,255,255,Missing,Operational