Approximate analytical description of the high latitude extinction Alexei Nekrasov, Kirill Grishin, Dana Kovaleva and Oleg Malkov Eur. Phys. J. Spec. Top., 230 10 (2021) 2193-2205 Published online: 07 July 2021 DOI: 10.1140/epjs/s11734-021-00210-0