Monthly bulletin

At the beginning of each month is issued a bulletin of the geomagnetic conditions at Coimbra during the previous month. Among other things, this report includes each day's tri-hourly local K and ak indices; the average intensity and daily amplitudes of the different components of the magnetic field; a list of the most quiet and disturbed days of that month (both in local and a global terms) and a description of the main geomagnetic storms registered by Coimbra's magnetic station. This section provides our latest bulletin. A few other reports are available on our database section. Older reports can be found on OGAUC's webpage. If you use our data please make reference to "data from Observatório Geofísico e Astronómico da Universidade de Coimbra, made available through the Space Weather Service SPINLab (http://www.mat.uc.pt/~obsv/SPINLab/SPINLab_home.php) from Centro de Investigação da Terra e do Espaço da Universidade de Coimbra".