Notes: Improved Baltic boundary; for use in MYP Evolution id: NWS-NRT-PHY-20; NWS-NRT-PHY-22 Deliverable: 03-PHY [NOWMAPSIII ticket](https://metoffice.sharepoint.com/sites/copernicusmarinenwsext/Lists/NWS%20Deliverables/DispForm.aspx?ID=12&e=xEzte3)