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10,5
20,3
30,1
Keep a distance
ofm in.3m
Based on a visualangle
of one m inute
20
70
20
15
20
10
Źródło: Statista
10,5
20,3
30,1
Keep a distance
ofm in.3m
Based on a visualangle
of one m inute
20
70
20
15
20
10