Global changes in vessel traffic density per vessel categories during January-June 2020

Absolute difference in traffic density during January-June 2020, compared with equivalent months from 2019, and derived using cell-by-cell subtraction. Data is provided in GeoTiff format and structured in monthly folders. Coordinate reference system is Mollweide projection with a WGS84 datum.Vessel categories: (a) count (all vessels), (b) cargo, (c) tanker, (d) passenger, (e) fishing, (f) other vessels.