Depends on the university - UNSW average is 99.60 (Can get in with high 98 atar and high UMAT)
USYD double degree is 99.95
UWS/Newcastle - Is a hurdle of about 96.5 atar (iirc)
Most of the interstate unis are high atar (Flinders i think was 99.8+ for example, UQLD maybe 99+)
Newcastle,is 94.3 WSU is 95.5 or (93.5 if you live in the western suburbs)
Both are just hurdles - in other words if you get that or higher, you move to the next test which is a high enough UMAT score.
If you get a high enough UMAT then you get an interview.
All the other undergraduate med courses have much higher ATAR requirements.