If you are interested in stats for Cable News shows, the following CSV files contain mention counts for each of the news shows on the major networks.
First, the counts by Network, Show, Date, and Hour. Not all hours are present for all shows: tweetsByNetShowHour201407
Next, the counts by Network, Show, and Date. This is just an aggregation of the above data: tweetsByShowDay201407
Finally, just the counts by Network and Show: tweetsByShow201407
Let me know if you do anything fun with these!