Used in pv_reg_*()
to add proper region IDs and names.
A data frame with 14 rows and 4 variables:
kraj_id_ispv
character. Internal region code, appears in Excel file name
kraj_id
character. non-NUTS ID of kraj (region, NUTS3).
kraj_name
character. Czech name of kraj (region, NUTS3).
kraj_id_nuts3
character. NUTS ID of kraj (region, NUTS3)..