Under each campaign, there's a 'Report' tab which will provide information on how your campaign is progressing:
Track how many impressions are being served, how many impressions by each position (pre, mid or post-roll), impressions by flight and impressions by program over the duration of the campaign.
Exporting report to CSV
There's an 'export to CSV' button here:
Printing your reports
To print your report or save to PDF, simply select file - print in your browser and select the destination as 'save to PDF' as seen here: