When a journal forces you to turn a graph similar to this one into a black & white figure …
#arg #pain #datavispic.twitter.com/vnBOtYGnz0
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
also your line type variations are not as different to each other as they could be IMHO
yeah I used R standard, should do it manually and separate them more clearly.
Yeah, try it? I mean it's quite subjective. BTW my figure was made in C, so obviously everything was manually. (Not recommended). 
My R figure was made with this crazy code ;) ... admittedly I had to change the centralityPlot function a bit though.pic.twitter.com/DtVtDCmrSI
Haha, you don't wanna know how many thousands of lines of C that figure took. So glad I'm in 2012 anymore! 
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.