Your screen shot above show 'used' as 7.3 GB on disk. It should be around 13 GB.
As a check, when extracted correctly, you will have a 'maps' folder. Inside that will be 2 folders: '00' and 'EEC'.
Inside '00' are 5 more folders, inside 'EEC' there is one folder 'EEC_WLD' and a file 'PRODUCT.NDS'.
As a check, when extracted correctly, you will have a 'maps' folder. Inside that will be 2 folders: '00' and 'EEC'.
Inside '00' are 5 more folders, inside 'EEC' there is one folder 'EEC_WLD' and a file 'PRODUCT.NDS'.