No obstacle (9 V)
80,6
Circular grille (9 V)
79,3
Hexagonal grille (9 V)
65,4
No obstacle (7 V)
64,9
Nylon dust filter (9 V)
64,7
Circular grille (7 V)
64,4
Hexagonal grille (7 V)
55,9
Foam dust filter (9 V)
54,7
Nylon dust filter (7 V)
53,6
Circular grille (5 V)
50,8
No obstacle (5 V)
50,8
Foam dust filter (7 V)
41,8
Hexagonal grille (5 V)
40,5
Nylon dust filter (5 V)
35,7
Plastic dust filter (9 V)
31,0
Foam dust filter (5 V)
27,7
Plastic dust filter (7 V)
23,3
Plastic dust filter (5 V)
16,2