Magnetic storm observations from the Prague-Clementinum observatory on 1842-04-13@en

Data of magnetic storms recorded at the Prague-Clementinum observatory in 1839-1849 are presented. The data were obtained by digitising and processing the original old records published in the yearbooks of this historical observatory. The data set contains variation of declination [min] and horizontal magnetic field [nT] of 73 magnetic storms with the magnitudes being of at least a moderate level completed with the baseline of declination [deg] and baseline of horizontal megnetic field [nT]. All time data were transformed into UT, based on the longitude of the Göttingen observatory, which was 9.950°. The time shift is thus 39'48''. The date in the file name indicates the start day of the storm.本数据集展示了1839年至1849年间于布拉格克莱门特天文观测台（Prague-Clementinum observatory）记录的磁暴观测数据。该数据集通过对该历史观测台年鉴中刊载的原始旧记录进行数字化与处理后获取。数据集包含73场强度至少达中等水平的磁暴的磁偏角（declination）变化量（单位：[min]）与水平磁场分量（horizontal magnetic field）变化量（单位：[nT]），同时附带磁偏角基准值（单位：[deg]）与水平磁场分量基准值（单位：[nT]）。所有时间数据均基于哥廷根观测台（Göttingen observatory）的经度（9.950°）转换为世界时（UT），因此存在39分48秒的时间偏移量。文件名中标注的日期代表该磁暴的起始日期。