export csv

[akn]

I have the following group addresses:

1/1 / ... - the actual value of meter 
1/2 / ... - the value of meter  at the beginning of the month
1/3 / ... - the value of consumption for the current month
1/4 / ... - the value of consumption for the previous month

I need a script that once a month, generated a csv file on a local storage. Another script on the scheduled or by event sent this file by email.

thank you in advance