We've recently upgraded our one-time snapshot reports, adding new metrics and updating the look. Here's an explanation of the metrics included in the new TweetReach report. 

Below the image is a detailed explanation of each of the metrics. There's also integrated help in the report - just hover over the information icon next to any section heading to learn more about it.   

Reach
This number represents the overall reach of tweets in this report. Reach is the number of unique Twitter accounts that received tweets about your search query during this time period. Think of reach as the size of your unique potential audience. 

Exposure
Exposure is the number of overall impressions generated by tweets in this report (the total number of times tweets were delivered to timelines, including repeats). The exposure bar graph breaks down how many people saw how many tweets about your search query.

Activity
The activity section provides details about the tweets in this report, including:

• Total number of tweets analyzed
• Total number unique contributors (people who posted the tweets in this report)
• Duration of the time period covered by this report
• Graphical timeline showing tweet volume during the report period 
• Tweet type breakdown, including how many retweets and replies are included in the report

Top Contributors
This section shows you the top three contributors - participants whose tweets appear in this report. You'll see the highest contributor for each of three influence dimensions (sometimes the same person may show up in more than one category): 

• Highest Exposure - the participant whose tweets generated the most impressions
• Most Retweeted - the participant who received the most retweets 
• Most Mentioned - the participant who was @ mentioned the most times in this report

Top Tweets
This shows the three most retweeted tweets in this report, showing retweet counts for each tweet. This retweet count includes both new-style automatic retweets and old-style manual retweets that start with “RT @username.” In order for a tweet to show up as retweeted in this section, the original tweet must also be included in the report. 

Contributors
A complete list of all contributors (participants) in this report, including how many tweets they posted, how many retweets they received and how many impressions their tweets generated. This list is ordered by impressions.

Tweets Timeline
A full list of all tweets in this report, in reverse chronological order (newest first). This list includes timestamps, as well as start and end times.