changed return structure and added more detailed explanation to method description
changed return structure and added more detailed explanation to method description

pkoro/okeanos-LoD,themiszamani/okeanos-LoD,pkoro/okeanos-LoD,stevelaskaridis/okeanos-LoD,grnet/okeanos-LoD,grnet/okeanos-LoD,pkoro/okeanos-LoD,stevelaskaridis/okeanos-LoD,stevelaskaridis/okeanos-LoD,grnet/okeanos-LoD,stevelaskaridis/okeanos-LoD,themiszamani/okeanos-LoD,grnet/okeanos-LoD,pkoro/okeanos-LoD,themiszamani/okeanos-LoD,themiszamani/okeanos-LoD