The hight of freshly fallen snow (german: Neuschnee) is determined on the plattform of the observatory and verified by comparison with the water equivalent. Data is also checked for plausibilty by comparison with the values determined at the Zugspitzplatt.
sunshine duration
The spring of 2011 (March - Mai) holds the 110 year record for sunshine duration: 680 hours. The long term average is 427 hours.
mean monthly values
In case you plan to visit the Reserach Station you might be interested in the average air temperatures:
January: -8,5 °C April: -3 °C July: 5 °C October: 0,5 °C
Of course much higher or lower temperatures are not uncommon either.