I had a grey dot in my London version, but people complained that they thought it was an answer. How they thought that I have no idea, but not worth the hassle lol
Mauritius? That's the only one I found surprising at all. Would have expected.. Beijing, Seoul, Istanbul, Berlin, Washington, Khartoum, Cairo, Bucharest, Moscow, Casablanca, Chennai, Hong Kong, Chicago, Atlanta, Amsterdam, Manama, Dammam, Abuja, etc etc etc all to be significantly higher than Mauritius. Weird.
I am surprised that Manchester has more passengers flying to Dubai than Frankfurt. Amsterdam doesn't even make the list, very unexpected. I wonder if transfer flights are not taken into account, as Frankfurt and Amsterdam are important hubs in Europe.