In order to ensure the coherence of the MODB final product a common methodology has been adopted within the group to fulfill the successive quality control stages. Indeed most of the QC stages have been performed locally by the appropriate MODB partner. Only the final statistical check designed to ensure the global consistency of the bank will be made after the merging of the multiple individual data sets.
Roughly speaking the successive stages of the local QC protocol are as follows.
These are fully described in a comprehensive note:
A little ascii text recalling the signification of the main QC flags as they have been used until now is available here
The checking procedure has led the deletion or flagging of some pieces of information contained in the original data banks. Here are the reports of the alteration of the banks resulting from the (local) checking process.
GHER report: Bndo and Nodc original data bases