Supplemental material, sj-docx-1-hol-10.1177_09596836221080764 for The Baltic grey seal: A 9000-year history of presence and absence by Hans Ahlgren, Maiken Hemme Bro-J��rgensen, Aikaterini Glykou, Ulrich Schm��lcke, Anders Angerbj��rn, Morten Tange Olsen and Kerstin Lid��n in The Holocene