The temperature on July 4, 1911 was between 3.8 °C and 20.6 °C and averaged 13.3 °C. There was 14.5 hours of sunshine (87%). The average windspeed was 2 Bft (weak wind) and was prevailing from the west-southwest. Source: KNMI
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The Family tree Van Leeuwen publication was prepared by L.H.van Leeuwen (contact is not possible).
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