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In the advanced tab of the VRM you can download the data as a .csv or .xls file by using the download option in the top right of the screen (cloud with a downwards facing arrow). from that you should be able to edit the file to suit your requirements.
The time period you are viewing is the data that you will receive.
I am unsure if you can change the intervals as mine downloads with 15 minute intervals for the data.
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