Geomagnetic observatory vector (X, Y, Z) and scalar (F) definitive data (quasi-definitive data are available until the definitive data are ready) recorded by the Ebre Observatory institute. Units: nanoteslas (nT). Recording location: Horta de Sant Joan. Instrumentation: Variometers: LEMI-025 suspended 3-axis fluxgate magnetometer sampled at 1 s rate (filtered). Scalar magnetometers: GEM Systems GSM-90 sampled at 10 s rate. Absolute instrument: D/I-fluxgate magnetometer type TDJ6E-NM/FLM-4. Data are available in different interval types: 1-sec data; 1-min, 1-hour, 1-day and 1-month means.