Searching for ANP in the UCSC Genome database generated many locations for me to examine. I ended up using OMIM to find the official location of the gene for ANP.
I cannot see the picture clearly, but I think the locations are quite close to each other. I had the problem before, and it was caused by the difference in the reference sequences for this protein. If the locations are apart, it may because the gene/protein has a few isoforms, which are in different locations on the chromosome.