Exifanalyze.GPStype latitude = [ `North | `South ] * Exif.Numbers.rationaltype longitude = [ `East | `West ] * Exif.Numbers.rationaltype altitude = [ `AboveSeaLevel | `BelowSeaLevel ] * Exif.Numbers.rationaltype time_stamp_utc = {hour : Exif.Numbers.rational;min : Exif.Numbers.rational;sec : Exif.Numbers.rational;}type direction = [ `True | `Magnetic ] * Exif.Numbers.rational