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Debrecen Photoheliographic Data 1974 Catalogues: combined data: DPD1974.txt, daily data: dDPD1974.txt, group data: gDPD1974.txt, spot data: sDPD1974.txt Images of sunspot groups: 1974group_jpg Full-disk white-light observations: 1974fd_large_jpg, 1974fd_large_fits Magnetic observations: 1974magn (original), 1974magn_jpg (quick-look, solar north at the top)

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August	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
September	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
October	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
November	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
December	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31

ACKNOWLEDGMENTS

TÁMOP 4.2.2.C-11/1/KONV/2012-0015 ”Föld-rendszer adatok tudományos feldolgozása és az ismeretek társadalmasítása korszerű informatikai eszközök segítségével”.