Fig. 2From: Calling, texting, and moving: multidimensional interactions of mobile phone usersProximity given the communication medium. CCDF of CoL in E s ∩E loc , E c ∩E loc , (E c ∖E s )∩E loc , (E s ∖E c )∩E loc , and (E c ∪E s )∩E loc Back to article page