Table:
text: Athletics at the 1996 Summer Olympics – Men's 400 metres
Final
Final
ATHLETE FINAL_ LANE SEMI QUART HEAT
Michael Johnson ( USA ) 43.49 4 44.59 44.62 45.80
Roger Black ( GBR ) 44.41 3 44.69 44.72 45.28
Davis Kamoga ( UGA ) 44.53 2 44.85 44.82 45.56
Alvin Harrison ( USA ) 44.62 1 45.04 44.79 44.69
Iwan Thomas ( GBR ) 44.70 8 45.01 45.04 45.22
Roxbert Martin ( JAM ) 44.83 5 44.81 44.74 46.01
Davian Clarke ( JAM ) 44.99 6 44.87 44.98 45.54
Ibrahim Ismail Muftah ( QAT ) DNF 7 45.02 44.96 45.61

Question: Considering Athletics at the 1996 Summer Olympics - Men's 400 meters, if a lane of 4 has a QUART greater than 44.62, what is the lowest HEAT?