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Chart 5
Average area covered by multi-year sea ice during summer from 1968 to 2010 for
shipping route regions
Note(s): Note different scales on y-axis. For charts with no linear trend line
indicated the trend is not statistically significant at the 95% confidence
level.
Source(s): Environment Canada, 2011, Ice and Iceberg Charts, www.ec.gc.ca/glaces-ice/default.asp?lang=En&n=B6C654BB-1 (accessed
in May 2011).
