Counter defines decadal period which the given statistic represents.  Use buttons [>>] and [<<] to browse forward and backward in decadal periods. Use [Statistic]-menu to choose between statistics. Use button [2x1]to switch to dual window mode to compare pairs of charts. You may also choose to browse actual temporal array. Given statistics are based on 10-days period information from AARI sea ice conditions charts prepared in World Meteorologocal Organization SIGRID format (WMO, 1989) for 1950-1992 interval. Layer of sea ice total concentration is depicted in polar stereographical projection.

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