Cartography BTA 1:5,000 (reference year 2014). Master level curve tag

Layer of the BTA (reference year 2014) containing the labels of the level curves for the whole territory of Navarre at 1:5,000 scale. The BTA is an adaptation to the production of the National Cartographic Base (BCN) of the National Geographical Institute (IGN). BTA is the acronym for “Harmonised Topographical Base”. It is a data model agreed by the Autonomous Communities (CCAA) and approved by the Higher Geographical Council (CSG) of which there is a version v1 dated 2008.本数据集为BTA 2014参考年版本中的一个图层，涵盖纳瓦拉（Navarre）全境1:5000比例尺下的等高线（level curves）标注信息。BTA是西班牙国家地理研究所（National Geographical Institute, IGN）针对其国家基础制图数据库（National Cartographic Base, BCN）的生产适配成果。BTA为“Harmonised Topographical Base”的缩写，中文译名为地形协调基础库；该数据模型由西班牙自治区（Autonomous Communities, CCAA）统一商定，并经高级地理委员会（Higher Geographical Council, CSG）批准，其首个v1版本发布于2008年。