Elin, Sébastien and their 3 dogs arrived last Sunday, on skis, the weather remained splendid since. Yesterday, I explained them the scientific work, starting with a weather sounding with the helium balloon, then the radiometers, the daily weather report and the ice thickness measurements. Today, we are more looking at technical things: energy control with solar panels, wind generator and main generator, then stove maintenance, safety equipment, and keeping an eye on the temporary repairs of the hull. I'm leaving the boat tonight, for 5 weeks.