"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",3,8,6,219,1401 "2020-05-29",1,4,4,388,1401