= value corrected by Fritz Loewe. Data validated by Gert König-Langlo (mailto:Gert.Koenig-Lango@awi.de). Errors in the original data were corrected by using the registration diagrams. The global radiation values were converted from cal/cm2/min to W/m2 and divided with 2.2 as suggested from Georgi et al. 1935, page 119. Open questions concerning the calibration remain, see: hdl:10013/epic.31308.d001. See also doi:10.1594/PANGAEA.727180 for the meteorological synoptical observations.The original registration diagrams can be found in the Johannes Georgi's papers, which are preserved by the Archive for German Polar Research (AGPR, http://www.awi.de/en/about-us/service/archive-for-german-polar-research.html). For further information please turn to the archivist or to the AGPR's (http://adpsrv1.awi.de) search engine (only in German).