=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 11-Jun-1991
Monbetu I           641/001 RLR(1963) is 9.1m below BM Monbetu
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 12-Jul-1993
Monbetu I           641/001 RLR(1963) is 9.1m below BM Monbetu
This is now an historic station last data 1978
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 29-Aug-1995
A destructive earthquake and tsunami occurred in the Kuril Islands on
4 October 1994 - see Earth System Monitor, 5(4), June 1995.