The temperature on April 6, 1912 was between 8.9 °C and 16.9 °C and averaged 12.0 °C. There was 4.5 hours of sunshine (34%). The average windspeed was 5 Bft (very strong wind) and was prevailing from the west. Source: KNMI
When copying data from this family tree, please include a reference to the origin: W.A. van der Waal-VISSER, "Family tree Van der Waal", database, Genealogy Online (https://www.genealogieonline.nl/van-der-waal-stamboom/I79963.php : accessed November 10, 2024), "gerrit de HEER (1894-????)".
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