what are the listed airbase names?
abu al-duhur military airbase, al-qusayr military airbase, al-nasiriyah military airbase, al-nayrab military airbase, tha'lah military airbase, al-dumayr military airport, hama military airport, hamdan military airbase, jirah military airbase, khalkhalah military airbase, kowaires military airbase, marj ruhayyil military airbase, marj al-sultan military heliport, mezzeh military airport, menagh military airbase, qabr al-sitt military heliport, sayqal military airbase, shayrat air base, tabqa military airbase, taftanaz military airbase, tiyas military airbase
which of those is located at the top of the chart?
abu al-duhur military airbase