This dataset tracks the review status of Pitch submissions. It contains one record for each expected or actual reviewer of each completed Pitch submission. A user's reviewers include their designated graders (their manager, team managers, and any mandatory graders configured on the Pitch module) plus anyone else who has reviewed one of their submissions in that Pitch module.

A record with a non-null avg_score is a completed review: that reviewer's score for that submission. A record with a null avg_score means the reviewer has not reviewed that particular submission. Because a user can submit multiple times, a reviewer will have one record for every submission the user has completed, including ones they never reviewed.

To count only completed reviews, filter to records where avg_score is not null. Each reviewer can review a given submission once, so each non-null record is one review.