1.
Meteorological measurements in the upper air at station Utrecht, 1920-07-13 to 1920-07-13, ERA-CLIM ID 5986
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3.
Meteorological measurements in the upper air at station De Kooy, 1921-10-11 to 1923-12-27, ERA-CLIM ID 5005
Meteorological measurements in the upper air at station Duin Dal, 1916-09-06 to 1923-12-10, ERA-CLIM ID 5017
Meteorological measurements in the upper air at station E.L.T.A. Amsterdam, 1919-08-09 to 1919-09-11, ERA-CLIM ID 5966
Meteorological measurements in the upper air at station Bruxelles, 1920-01-02 to 1920-06-08, ERA-CLIM ID 5651
Meteorological measurements in the upper air at station De Bilt, 1911-01-13 to 1923-12-31, ERA-CLIM ID 5013
Meteorological measurements in the upper air at station Duin Dal, 1916-07-19 to 1916-07-20, ERA-CLIM ID 5968B
Meteorological measurements in the upper air at station De Kooy, 1921-09-09 to 1923-12-18, ERA-CLIM ID 5006
Meteorological measurements in the upper air at station Duin Dal, 1916-07-19 to 1916-07-20, ERA-CLIM ID 5968A
Meteorological measurements in the upper air at station Soesterberg, 1916-03-02 to 1923-11-08, ERA-CLIM ID 5018A