The trends tool provides a line graph that allows you to analyze the volume of tweets with a given hashtag over a given period of time.
By submitting multiple queries, you can compare various hashtags against each other on the same graph.
The data provided is not a count, but a percentage relative to a 10% sample of Twitter data per day.
If you find these tools useful, please cite the following article:Davis CA, Ciampaglia GL, Aiello LM, Chung K, Conover MD, Ferrara E, Flammini A, Fox GC, Gao X, Gonçalves B, Grabowicz PA, Hong K, Hui P, McCaulay S, McKelvey K, Meiss MR, Patil S, Peli Kankanamalage C, Pentchev V, Qiu J, Ratkiewicz J, Rudnick A, Serrette B, Shiralkar P, Varol O, Weng L, Wu T, Younge AJ, Menczer F. (2016) OSoMe: the IUNI observatory on social media. PeerJ Computer Science 2:e87 https://doi.org/10.7717/peerj-cs.87