Figure 2From: Modeling international mobility using roaming cell phone traces during COVID-19 pandemicOn the left, commuters traveling to UK measured with roaming data (blue) and air passengers from air traffic data (red). On the right, commuters from UK to other countries. In both cases, we can spot the effects of the COVID-19 pandemic (e.g., suggestions against all but essential travels, travel bans, lockdown and other countermeasures that impacted international mobility)Back to article page