=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 11-JUN-91 :
Viana               210/011 RLR(1984) is 18.0m below TGBM
=========================== BENCHMARK INFORMATION UPDATE ADDED  12-JUL-93 :
Viana               210/011 RLR(1984) is 18.0m below TGBM
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 1998Nov04 :
data for 1984-85  replaced with revised values received from authority 41
Viana is an historic station last data 1985

