The
range of values is 4.0 to 5.6 million square kilometers, but the distribution is skewed toward lower values, suggesting either persistent conditions or a
substantial drop below 2008 and 2010 values and the long - term downward trend.
The distribution of the June Outlooks is skewed toward lower values, with a
range of 4.0 to 5.6 million square kilometers, suggesting either persistent conditions or a
substantial drop below 2008 and 2010 values and the long - term downward trend.