How much of an age difference is there between Wednesday and Pugsley?

In the classic television series, The Addams Family, Wednesday and Pugsley Addams are brother and sister. Wednesday is portrayed as being the oldest of the two, while Pugsley is the youngest. Wednesday is portrayed as being a teenager, while Pugsley is portrayed as being a pre-teen. Therefore, there is a significant age difference between the two characters. It is estimated that Wednesday is at least four or five years older than her brother Pugsley. In the original television series, Wednesday is said to be thirteen years old, while Pugsley is estimated to be around nine or ten years old. This would mean there was a four year age difference between the two siblings. However, in the recent Addams Family movie adaptation, the age difference between Wednesday and Pugsley is slightly less. In the movie, Wednesday is said to be sixteen years old, and Pugsley is said to be thirteen. This would mean that there is a three year age difference between the two characters.