0 0 NO SEA ICE IN SIGHT
1 1 SHIP IN OPEN LEAD MORE THAN 1.0 NAUTICAL MILE WIDE, OR SHIP IN FAST ICE WITH BOUNDARY BEYOND LIMIT OF VISIBILITY
2 2 SEA ICE PRESENT IN CONCENTRATIONS LESS THAN 3/10 (3/8), OPEN WATER OR VERY OPEN PACK ICE
3 3 4/10 TO 6/10 (3/8 TO LESS THAN 6/8), OPEN PACK ICE
4 4 7/10 TO 8/10 (6/8 TO LESS THAN 7/8), CLOSE PACK ICE
5 5 9/10 OR MORE, BUT NOT 10/10 (7/8 TO LESS THAN 8/8), VERY CLOSE PACK ICE
6 6 STRIPS AND PATCHES OF PACK ICE WITH OPEN WATER BETWEEN
7 7 STRIPS AND PATCHES OF CLOSE OR VERY CLOSE PACK ICE WITH AREAS OF LESSER CONCENTRATION BETWEEN
8 8 FAST ICE WITH OPEN WATER, VERY OPEN OR OPEN PACK ICE TO SEAWARD OF THE ICE BOUNDARY
9 9 FAST ICE WITH CLOSE OR VERY CLOSE PACK ICE TO SEAWARD OF THE BOUNDARY
14 14 UNABLE TO REPORT, BECAUSE OF DARKNESS, LACK OF VISIBILITY, OR BECAUSE SHIP IS MORE THAN 0.5 NAUTICAL MILE AWAY FROM ICE EDGE
31 31 MISSING VALUE
