Figure 4. Variability of communication capacity and activity.
(A) and (B) show different snapshots of the neighborhood of two different individuals (in red) at 4 equally spaced times in the observation time window t = 52, 105, 158, and 211 days. Each black (grey) line corresponds to an active (inactive) tie at that particular instant. (C) Log-density plot of the communication activity nα,i as a function of the communication capacity κi for each individual in our database. Solid line corresponds to the line 
obtained through PCA. Dashed curves are the iso-connectivity lines 
for ki = 10, 20, 50.