Normal size opening is mostly based on body size. You are quite small, so 41mm may be your normal size opening. However, betel nuts are known to cause trismus (reduced opening) of the mouth. Use the 3-finger test (above) to determine if you are achieving your maximum opening.
Brown County is a county in the U.S. state of Wisconsin. As of the 2010 census, the population was 248,007, making it the fourth-most populous county in Wisconsin. The county seat is Green Bay. Brown County is part of the Green Bay, WI Metropolitan Statistical Area.
Green Pond is located in Rockaway Township in Morris County, but has a Newfoundland, New Jersey (Passaic County) mailing address. Newfoundland came to wider attention in 2003 when large portions of the independent film, The Station Agent, were filmed there.