=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 04-Oct-2007 :
Data for Port Bloc has been added to the PSMSL database.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 29-Mar-2012 :
Primary benchmark is O. NP-6 7.808m above TGZ.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 29-Sep-2014 :
When downloaded from SONEL the Port Bloc dataset has a lots of additional data included particularly for the 1960s and 1970s other areas of data had also been revised. Because of this the whole dataset has been re-loaded. Using data also from the SONEL website the values of the latitude and longitude have been revised.

