jgg     2013 33 (3):  72-78    ISSN: 0412-1961  CN: 21-1139/TG ESTIMATION OF PRECIPITABLE WATER VAPOR BASED ON  INTERPOLATED PRESSURE DATA 1)College of Geomatics and Geoinformation, Guilin University of Technology, Guilin 541004 2)Guangxi Key Laboratory of Spatial Information and Geomatics, Guilin 541004 Received: 2012-10-29  Revised: null  Online: 2013-06-18 Supporting info