Weird measures when pushing frequency does not match measuring frequency

[cgueret]

The kit is returning weird readings every 5 reading (c.f. the screenshot of a CSV opened in LibreOffice). I currently have my kit setup to measure data every minute and push it to the Web every five minute, without any external SD-card. Maybe this explains the issue (i.e. 4 readings being lost every time and replaced by wrong data)... if so, it would be handy to warn the user that caching data without an SD card is not a good idea ;-)

I'll update the configuration of the kit tonight to set both measuring and pushing on the same frequency...