This is the 7569th most frequent Polish word.
kwartalny
"Quarterly" (relating to a period of three months).
'Kwartalny' is used as an adjective describing the frequency of the report as occurring every quarter.
Mam kwartalny raport do przygotowania.
I have a quarterly report to prepare.
'Kwartalny' here modifies 'oceny' (evaluations), indicating they occur every quarter.
Zakończyliśmy kwartalne oceny w firmie.
We have completed the quarterly evaluations in the company.
'Kwartalny' describes the cycle ('cykl') of publication, meaning it happens once every quarter.