Title: Rediscovering the observations of solar prominences from 1906 to 1957 recorded by the Madrid Astronomical Observatory Original source: A.J.P. Aparicio, V.M.S. Carrasco,M.C. Gallego, J.M. Vaquero, 2023, Journal of Space Weather and Space Climate Year: year of the observation Days: number of observation days N: total number of prominences observed ft: frequency of the total number of prominences fn: frequency of the number of prominences observed in the northern hemisphere fs: frequency of the number of prominences observed in the southern hemisphere Note 1: the frequency is defined as the number of prominences divided by the number of observation days Note 2: the indices 1, 2, and 3 attached to the name of the different parameters shown in the columns of this file indicate: "1" represents annual prominence data published in the yearbooks and bulletins of the Madrid Astronomical Observatory, "2" indicates the data of the Madrid prominence series by Gullón (1950), and "3" depicts the data of the Madrid homigenized prominence series contructued in our article. Year Days_1 N_1 ft_1 fn_1 fs_1 Days_2 N_2 ft_2 fn_2 fs_2 Days_3 N_3 ft_3 fn_3 fs_3 1906 153 954 6.24 3.72 2.48 152 635 4.18 2.45 1.72 152 635 4.18 2.45 1.72 1907 131 1084 8.27 4.11 4.16 138 742 5.38 2.74 2.64 138 742 5.38 2.74 2.64 1908 194 1857 9.57 4.5 5.07 194 1090 5.62 2.5 3.12 194 1090 5.62 2.5 3.12 1909 214 1789 8.36 4.27 4.09 218 1028 4.72 2.37 2.35 218 1028 4.72 2.37 2.35 1910 198 1143 5.77 2.71 3.06 200 697 3.48 1.56 1.92 200 697 3.48 1.56 1.92 1911 160 545 3.41 1.01 2.4 156 248 1.59 0.47 1.12 156 248 1.59 0.47 1.12 1912 174 353 2.03 0.6 1.43 174 353 2.03 0.6 1.43 174 353 2.03 0.6 1.43 1913 153 300 1.97 0.78 1.19 153 382 2.5 0.97 1.53 153 382 2.5 0.97 1.53 1914 163 502 3.08 1.3 1.78 163 501 3.07 1.31 1.77 163 501 3.07 1.31 1.77 1915 114 586 5.14 2.61 2.53 114 756 6.63 3.35 3.28 114 756 6.63 3.35 3.28 1916 146 969 6.29 3.47 2.82 146 1254 8.59 4.57 4.02 146 1254 8.59 4.57 4.02 1917 113 876 7.75 4.08 3.67 113 1115 9.96 5.28 4.68 113 1115 9.96 5.28 4.68 1918 116 670 5.78 2.33 3.45 117 882 7.54 4 3.54 117 882 7.54 4 3.54 1919 139 640 4.6 2.52 2.08 137 838 6.12 3.43 2.69 137 838 6.12 3.43 2.69 1920 109 437 4.01 1.69 2.32 107 565 5.28 2.36 2.92 107 565 5.28 2.36 2.92 1921 - - - - - - - - - - - - - - - 1922 - - - - - - - - - - - - - - - 1923 - - - - - - - - - - - - - - - 1924 - - - - - - - - - - - - - - - 1925 62 379 6.1 3.74 2.36 62 462 7.45 4.5 2.95 62 462 7.45 4.5 2.95 1926 88 564 6.41 3.62 2.78 88 674 7.86 4.49 3.37 88 674 7.86 4.49 3.37 1927 106 573 5.41 2.98 2.43 106 715 6.75 3.7 3.05 106 715 6.75 3.7 3.05 1928 102 568 5.57 2.68 2.89 102 716 7.02 3.36 3.66 102 716 7.02 3.36 3.66 1929 74 316 4.27 1.69 2.58 74 364 4.92 1.9 3.02 74 364 4.92 1.9 3.02 1930 122 397 3.25 1.71 1.54 122 445 3.65 1.88 1.77 122 445 3.65 1.88 1.77 1931 143 502 3.51 1.78 1.73 143 502 3.51 1.78 1.73 143 502 3.51 1.78 1.73 1932 153 451 2.95 1.76 1.19 153 451 2.95 1.76 1.19 153 451 2.95 1.76 1.19 1933 136 364 2.68 1.63 1.05 136 370 2.72 1.66 1.06 136 370 2.72 1.66 1.06 1934 85 297 3.49 1.61 1.88 85 297 3.49 1.61 1.88 85 297 3.49 1.61 1.88 1935 256 1243 4.86 2.2 2.68 256 1243 4.86 2.2 2.68 256 1243 4.86 2.2 2.68 1936 169 1097 6.49 3.37 3.22 169 1097 6.49 3.37 3.22 169 1097 6.49 3.37 3.22 1937 184 1178 6.4 3.13 3.27 184 1178 6.4 3.13 3.27 184 1178 6.4 3.13 3.27 1938 94 318 3.38 2.15 1.35 100 347 3.47 2.2 1.39 100 347 3.47 2.2 1.39 1939 40 186 4.65 2.76 1.91 40 186 4.65 2.76 1.91 40 186 4.65 2.76 1.91 1940 54 259 4.8 2.09 2.7 54 259 4.8 2.09 2.7 54 259 4.8 2.09 2.7 1941 102 347 3.4 1.91 1.49 102 347 3.4 1.91 1.49 102 347 3.4 1.91 1.49 1942 - - - - - - - - - - - - - - - 1943 24 81 3.37 1.13 2.25 24 81 3.37 1.13 2.25 24 81 3.37 1.13 2.25 1944 184 580 3.15 1.53 1.62 184 580 3.15 1.53 1.62 184 580 3.15 1.53 1.62 1945 147 711 4.84 2.14 2.7 147 711 4.84 2.14 2.7 147 711 4.84 2.14 2.7 1946 98 724 7.4 3.7 3.8 98 724 7.39 3.67 3.81 98 724 7.39 3.67 3.81 1947 94 756 8 4.3 4 94 756 8.04 4.3 4 94 756 8.04 4.3 4 1948 122 1020 8.4 4.1 4.7 122 1020 8.36 4.11 4.68 122 1020 8.36 4.11 4.68 1949 130 967 7.4 4.4 3.4 130 967 7.44 4.4 3.35 130 967 7.44 4.4 3.35 1950 115 609 5.3 3 2.4 - - - - - 115 609 5.3 3 2.4 1951 163 762 4.7 2.3 2.5 - - - - - 163 762 4.7 2.3 2.5 1952 155 540 3.5 1.9 1.7 - - - - - 155 540 3.5 1.9 1.7 1953 204 561 2.8 1.4 1.3 - - - - - 204 561 2.8 1.4 1.3 1954 257 593 2.3 1.3 1 - - - - - 257 593 2.3 1.3 1 1955 177 616 3.5 2.1 1.4 - - - - - 177 616 3.5 2.1 1.4 1956 221 925 4.2 2.4 1.8 - - - - - 221 925 4.2 2.4 1.8 1957 34 124 3.6 2.1 1.5 - - - - - 34 124 3.6 2.1 1.5