JEITA CP-3451 - 46 - 4.6.6 GPS Attribute Information The attribute information (field names and codes) recorded in the GPS Info IFD is given in Table 12, followed by an explanation of the contents. Table 12 GPS Attribute Information   Tag ID Tag Name Field Name Dec Hex Type Count A. Tags Relating to GPS GPS tag version GPSVersionID 0 0 BYTE 4 North or South Latitude GPSLatitudeRef 1 1 ASCII 2 Latitude   GPSLatitude 2 2 RATIONAL 3 East or West Longitude GPSLongitudeRef 3 3 ASCII 2 Longitude   GPSLongitude 4 4 RATIONAL 3 Altitude reference GPSAltitudeRef 5 5 BYTE 1 Altitude   GPSAltitude   6 6 RATIONAL 1 GPS time (atomic clock) GPSTimeStamp 7 7 RATIONAL 3 GPS satellites used for measurement GPSSatellites 8 8 ASCII Any GPS receiver status GPSStatus 9 9 ASCII 2 GPS measurement mode GPSMeasureMode 10 A ASCII 2 Measurement precision GPSDOP 11 B RATIONAL 1 Speed unit GPSSpeedRef 12 C ASCII 2 Speed of GPS receiver GPSSpeed   13 D RATIONAL 1 Reference for direction of movement GPSTrackRef 14 E ASCII 2 Direction of movement GPSTrack 15 F RATIONAL 1 Reference for direction of image GPSImgDirectionRef 16 10 ASCII 2 Direction of image GPSImgDirection 17 11 RATIONAL 1 Geodetic survey data used GPSMapDatum 18 12 ASCII Any Reference for latitude of destination GPSDestLatitudeRef 19 13 ASCII 2 Latitude of destination GPSDestLatitude 20 14 RATIONAL 3 Reference for longitude of destination GPSDestLongitudeRef 21 15 ASCII 2 Longitude of destination GPSDestLongitude 22 16 RATIONAL 3 Reference for bearing of destination GPSDestBearingRef 23 17 ASCII 2 Bearing of destination GPSDestBearing 24 18 RATIONAL 1 Reference for distance to destination GPSDestDistanceRef 25 19 ASCII 2 Distance to destination GPSDestDistance 26 1A RATIONAL 1 Name of GPS processing method GPSProcessingMethod 27 1B UNDEFINED Any Name of GPS area GPSAreaInformation 28 1C UNDEFINED Any GPS date GPSDateStamp 29 1D ASCII 11 GPS differential correction GPSDifferential 30 1E SHORT 1 A.    Tags Relating to GPS GPSVersionID Indicates the version of GPSInfoIFD. The version is given as 2.2.0.0. This tag is mandatory when GPSInfo tag is present. Note that the GPSVersionID tag is written as a different byte than the Exif Version tag. Tag = 0 (0.H) Type = BYTE Count = 4 Default =       2.2.0.0 2.2.0.0 = Version 2.2 Other = reserved GPSLatitudeRef Indicates whether the latitude is north or south latitude. The ASCII value 'N' indicates north latitude, and 'S' is south latitude.   Tag = 1 (1.H)