1.
Meteorological measurements in the upper air at station Duin Dal, 1916-09-06 to 1923-12-10, ERA-CLIM ID 5017
2.
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 Duin Dal, 1916-07-19 to 1916-07-20, ERA-CLIM ID 5968B