There are currently 76 accredited airports in 15 countries at Level 1 'Mapping', representing 3.6% of European air passenger traffic.
There are currently 46 accredited airports in 19 countries at Level 2 'Reduction', representing 8.4% of European air passenger traffic.
There are currently 19 accredited airports in 10 countries at Level 3 'Optimisation', representing 21.5% of European air passenger traffic.
There are currently 37 accredited airports in 16 countries at Level 3+ 'Neutrality', representing 18.8% of European air passenger traffic.
There are currently 13 airports accredited at Level 4 'Transformation', representing 7.3% of European air passenger traffic.
There are currently 19 airports accredited at Level 4+ 'Transition’, representing 13.5% of European air passenger traffic.