=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 11-JUN-91 :
San Mateo           823/034 RLR(1986) is 9.4m below BM Guano Is 1851
=========================== BENCHMARK INFORMATION UPDATE ADDED  12-JUL-93 :
San Mateo           823/034 RLR(1986) is 9.4m below BM Guano Is 1851
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 26-Jan-2012 :   
This is an historic station. Last data value received is that for August
1988. Station has been labelled 'inactive'. Before the data ended the
Primary benchmark was changed to BM 1 9.576m relative to gauge datum.

