=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 11-JUN-91 :
Pointe Noire        424/021 RLR(1979) is 9.6m below Repere B1
=========================== BENCHMARK INFORMATION UPDATE ADDED  12-JUL-93 :
Pointe Noire        424/021 RLR(1979) is 9.6m below Repere B1
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 12-NOV-93 :
data 1980-83 and 1988 received from TOGA office
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 12-NOV-93 :
data for 1959-60 and 1977-79 received from authority 18

