What constitutes "sufficiently large," however, will vary depending upon a number of other factors such as the size of other groups also present, the dimensions of the space itself, or the amount of leeway allowed by the setting in what is considered acceptable behavior. … Finally, the range of behavior thought to be permissible in the setting may also affect how large a group is required to create a sense of being in home territory. Only a very large group, for example, would risk loud talk and laughter in a church, while a much smaller group would feel quite free to exhibit similar behavior on a city bus.

Lyn H. Lofland, World of Strangers_ Order a…, loc. 824