Previous to 2009 data last data was August 2002. Datum remains TSO 1986 and Primary benchmark BM 3. However the relationship between the two has changed from previously 4.238m to 4.263m. The RLR factor has been modified to 4.637m to adjust for this.
Documentation added 2012-02-27
Surigao was 'buddy checked' with Cebu both display an area of possible suspect data for the period Dec 1997-Dec 1999 because of this the data have not been flagged as suspect. Gauge type THALIMEDES
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