0 0 Open water
1 1 Ice in belts or patches
2 2 Ice evenly distributed
3 3 Polynya(s) in combination with leads or cracks
4 4 Lead(s) in combination with cracks
5 5 Single polynya
6 6 Single lead
7 7 No openings in the ice
8 8 Not used
9 9 Not determined or unknown
15 15 Missing value
