Notation	Name	Description	Status
0	No sea ice in sight		stable
1	Ship in open lead more than 1.0 nautical mile wide, or ship in fast ice with boundary beyond limit of visibility		stable
2	Sea ice present in concentrations less than 3/10 (3/8) open water or very open pack ice		stable
3	4/10 to 6/10 (3/8 to less than 6/8), open pack ice		stable
4	7/10 to 8/10 (6/8 to less than 7/8), close pack ice		stable
5	9/10 or more, but not 10/10 (7/8 to less than 8/8), very close pack ice		stable
6	Strips and patches of pack ice with open water between		stable
7	Strips and patches of close or very close pack ice with areas of lesser concentration between		stable
8	Fast ice with open water, very open or open pack ice to seaward of the ice boundary		stable
9	Fast ice with close or very close pack ice to seaward of the boundary		stable
14	Unable to report, because of darkness, lack of visibility, or because ship is more than 0.5 nautical mile away from ice edge		stable
31	Missing value		stable