This data set produces GPS raw data called RINEX (Receiver
INdependent EXchange format) files, containing clock information
for microwave propagation between GPS satellites and an antenna.
The GPS antenna has been on the observational grass field of DMH
(Department of Meteorology and Hydrology) office in Sittwe,
Myanmar since May 2005 (now in progress). Time interval of the
raw data is 30-second. This site has been operated in
JAMSTEC/IORGC research project. In order to estimate
precipitable water vapor from the GPS raw data, it's necessary
to calculate atmospheric delay by using GPS analysis software,
and then translate the atmospheric delay to precipitable water
vapor by using surface pressure and temperature, which have been
measured together with GPS data at the same site (see the
description for AWS in Sittwe). Time interval and estimated
value of the atmospheric delay depend on parameter settings of
the analysis software. Now the JAMSTEC/IORGC research project
has GIPSY-OASIS and Bernese software licenc