code: def latitude(value):
      
      lat = round(float_(value), 5)
      if lat > 90.:
          raise ValueError('latitude %s > 90' % lat)
      elif lat < -90.:
          raise ValueError('latitude %s < -90' % lat)
      return lat
docs: :param value: input string
      :returns: latitude float, rounded to 5 digits, i.e. 1 meter maximum
  
      >>> latitude('-0.123456')
      -0.12346