NSIDC: for Arctic sea ice extent watchers: an interactive graph, choose the years you want to view

http://nsidc.org/arcticseaicenews/charctic-interactive-sea-ice-graph/

• View additional years by clicking the dates in the legend.
• Roll your cursor over the line to see daily sea ice extent values.
• Zoom in to any area on the chart by clicking and dragging your mouse.
• To see a corresponding daily sea ice concentration image, click on a line in the chart. Sea ice extent is derived from sea ice concentration. Images are not available for the average or standard deviation.
• Data are from the Sea Ice Index .
• Graphs shown here may vary slightly from graphs displayed in Arctic Sea Ice News & Analysis, due to differences in handling leap years. However, the underlying data values are the same.
• Currently, some functions do not work in Internet Explorer. We recommend using a different browser.
• This interactive graph is a beta version. If you have questions or problems, please contact NSIDC User Services at nsidc@nsidc.org .