Complex sentence: The Aeros were the Western Division Champions from 1973-74 to 1976-77 seasons, as well as finishing second in the Western Division in 1972-73 and third in the league in 1977-78.
Split into simpler sentences: The Aeros were the Western Division Champions from 1973-74 to 1976-77 seasons. They finished second in the Western Division in 1972-73 and third in the league in 1977-78.