RT dataset T1 Instances used in the paper Efficient assignment of flight levels: A variable neighborhood search approach A1 Pacheco Bonrostro, Joaquín A1 Casado Yusta, Silvia K1 Air traffic management K1 Flight level assignment K1 Sustainable and economic management K1 Safe air travel K1 Heuristic optimization K1 Variable neighborhood search K1 Tráfico aéreo-Control K1 Air traffic control K1 Optimización combinatoria K1 Combinatorial optimization AB The data set is a set of txt files with the fictitious instaces used in the paper "Efficient assignment of flight levels: A variable neighborhood search approach" PB Universidad de Burgos YR 2025 FD 2025-05-24 LK http://hdl.handle.net/10259/10493 UL http://hdl.handle.net/10259/10493 LA eng NO The authors are grateful for the following entities, projects, and grants: The Spanish Research Agency and European Union (Project PID2022-139543OB-C44) and Regional Government of Castilla y León and FEDER founds (BU021G24). DS Repositorio Institucional de la Universidad de Burgos RD 29-may-2025