[sublinear]

All I really learned from this is that European skies have a much higher density of flights than the rest of the world.

If the future of aviation is similar flight densities everywhere then people might actually begin to care about this topic.

[prennert]

Remember that there are more flights during the day than during the night. When you posted this it was late afternoon in Europe, noon on the East Coast US and early morning on the West Coast. And of course it was night in Asia.