1. Ph.D. Candidate, Institute of Geodesy, Univ. of Warmia and Mazury, 1 Oczapowskiego St., 10-957 Olsztyn, Poland. ORCID: .
2. Associate Professor, Institute of Geodesy, Univ. of Warmia and Mazury, 1 Oczapowskiego St., 10-957 Olsztyn, Poland (corresponding author). ORCID: .