R. Stübi (MeteoSwiss) and H. Schill (PMOD/WRC Davos) – Daily Dobson #101 observations until 2014, Dobson #062 after. The Dobson has been fully automated since 2014. Data begin in July 1926, archived since 1990. This instrument moved to Davos in February 2021. Data through 2013 archived under previous PI (Viatte).
PMOD: Physical Meteorological Observatory in Davos (Switzerland)