<p><strong>In the National Geodetic and Cartographic Resources are collected and available information and data (including archival) of basic geodetic points for the entire country in the networks.</strong></p>
<p>Coordinates of the horizontal basic network are available in the spatial reference system "PL-ETRF89" or "PL-ETRF2000" and the national coordinate systems,„PL-1992” i ”PL-2000”.</p>
<p>The heights of levelling network are available in The Height Normal System PL-KRON86-NH i PL-EVRF2007-NH. For some points the ellipsoid heights are definied in according to the ellipsoid GRS 80.</p>
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