A group of four students visited the sounding site for the 12Z launch. We gave them a tour (their English was very good), and they helped launch the balloon. They were a great group and lots of fun. They even have their own weather station:
One of the (adult) guests was from the Centro Ciência Viva da Floresta, the local science center in Proença-a-Nova.
If any of the students find this log entry, your balloon burst at 22.5 km high, -60 degrees Celsius, and you will be able to see a plot of it on this page.