That's interesting, I wouldn't have thought Stukas would have still been in service, especially in the defence of Berlin. The skies were full of Soviet and Allied fighters, it must have been hard going for them.
Anyway, it says that 15.4% of all T-34s were destroyed by 37mm calibre rounds. And even more amazingly 4.7% of all T-34s destroyed up to September 1942 were destroyed by 20mm calibre rounds, Bf-109s strafing maybe.