It was here that he met Jan Noppen (1706–1734), the Halfweg inspector, who started the earliest continuous weather station in Zwanenburg with measurements three times daily of temperature, air pressure, humidity, and rainfall.
In this location, he encountered Jan Noppen (1706–1734), the Halfweg inspector, who initiated the earliest continuous weather station in Zwanenburg with daily records of temperature, air pressure, humidity, and rainfall.