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Clicking the 'Timeseries' section will now prompt a list to appear. The list contains variables collected from the Sulafjorden buoy. Looking at the data section we can learn more about what the variables represent.
Select 'Hm0' which is described as "Significant wave height estimate from spectrum".
It should now look like this.
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To finalize the dashboard click 
'Apply Changes' at the bottom leftright.
You can add multiple entities and compare data from different sources in the same widget. It is also possible to change the color and look of the widget. This can be done under the 'Settings' tab for the widget.
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