To Access the Analytics Dashboard of your campaign, click on the graph icon 
on the right of the same line of the campaign name. The informations shown in the dashboard cover an interval of three months between the current date and 90 days ago. Older than 90 days data are stored within Connected-Stories database and retrievable upon request.
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The Analytics Dashboard is composed of 4 main sections. Chose below the specific section you are most interested in:
Impressions and Click ThroughsClickThroughs
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Engagement and Actions
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Reach and Frequency
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User Journey
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