"local_date","messages_sent_daily_countmostfrequentcontact","messages_sent_daily_count","messages_sent_daily_distinctcontacts","messages_sent_daily_timefirstmessage","messages_sent_daily_timelastmessage"
"2020-05-28",1,8,8,219,1401
"2020-05-29",0,4,4,388,1401