The document contains graphs and charts showing tweet volume on various topics related to President Obama's 2009 inauguration, including mentions of Obama, Bush, and Kennedy over time; tweets about key people like Clinton, Biden, and Michelle Obama; tweets about cultural personalities who performed or spoke at the inauguration like Yo-Yo Ma, Itzhak Perlman, and Joseph Lowery; tweets about TV channels people used to watch the inauguration like CNN, CBS, and BBC; and tweets about miscellaneous topics like the presidential wheelchair and VP Cheney leaving the White House. The graphs show peaks in tweet volume around major events like speeches, performances, and Kennedy collapsing, indicating people were live tweeting as the inauguration progressed.