The radius of the air bubble around suburban middle class white people living in Australia, New Zealand, England, North America and Canada is generally the same. It can be broken down into four distinct zone distances.
1. Intimate Zone (between 15 and 45 centimetres or 6 to 18 inches)
Of all the zone distances, this is by far the most important as it is this zone that a person guards as if it were his own property. Only those who are emotionally close to that person are permitted to enter it. This includes lovers, parents, spouse, children, close friends and relatives. There is a sub-zone that extends up to 15 centimetres (6 inches) from the body that can be entered only during physical contact. This is the close intimate zone.