Retrieval, by electronic download, and the use of data sets is free of charge for academic research purposes. The use or reproduction of data for commercial purpose requires prior written permission from KMIO ISTP SB RAS, and it is generally not free of charge. When using data from the database, a link to the source URL is required. KMIO has calendars of observation of events included in the database. Inquiries can be sent to: hancok@iszf.irk.ru.