Trends to csv

[admin]

Timestamps are in UTC which conversion to date string does not take into account.

Replace this:

Code:

date = os.date('%d/%m/%y %H:%M', row1[ 1 ])

With this:

Code:

date = os.date('!%d/%m/%y %H:%M', row1[ 1 ])

There's bug in CSV export in Trends UI where data is shifted by one step (15 minutes in your case).