=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 11-JUN-91 :
Lisbon              210/023 RLR(1981) is 12.4m below TGBM
=========================== BENCHMARK INFORMATION UPDATE ADDED  12-JUL-93 :
Lisbon              210/023 RLR(1981) is 12.4m below TGBM
Lisbon is an historic station last data 1985

