Correlation between IGRF2000 model and measured geomagnetic data on the territory of the Republic of Macedonia from measurements in 2003 and 2004

On the basis of the measurements carried out in 2003 and 2004 on the network of repeat stations in the Republic of Macedonia, correlation between IGRF and the 2003 model as well as the 2004 model and analysis between the models were made. It should take in consideration that the difference in altitude among repeat stations (15 points) is about 1300 meters (Galicica is at highest sea level of 1691 m and Nikolic at lowest of 300 m). During data processing, correction for altitude was not made, and measured data were corrected with the data from neighboring observatories Panagiuriste, Bulgaria, Tihany, Hungary and Aquila, Italy. The paper presents correlations between IGRF model and 2003 and 2004 model for all components of geomagnetic field. The time changes for 2003 and 2004 were also calculated