Sunspot Records 1950–2007
13,360 / 15,663 sheets usableYears usable / all sheets
19502 / 9
1951253 / 266
1952270 / 291
1953287 / 303
1954286 / 292
1955284 / 299
1956270 / 299
1957262 / 299
1958264 / 307
1959231 / 280
1960235 / 271
1961233 / 261
1962210 / 254
1963194 / 258
1964246 / 274
1965245 / 280
1966224 / 261
1967244 / 297
1968241 / 278
1969224 / 266
1970262 / 291
1971274 / 283
1972231 / 251
1973263 / 303
1974279 / 292
1975280 / 302
1976257 / 287
1977246 / 275
1978239 / 271
1979209 / 285
1980207 / 256
1981248 / 288
1982254 / 301
1983229 / 295
1984260 / 290
1985271 / 292
1986262 / 278
1987221 / 254
1988215 / 272
1989187 / 209
1990168 / 293
1991217 / 252
1992222 / 273
1993241 / 265
1994257 / 283
1995266 / 275
1996111 / 235
1997218 / 237
1998211 / 248
1999181 / 265
2000173 / 272
2001203 / 276
200282 / 279
2003239 / 252
2004266 / 280
2005216 / 236
2006221 / 238
2007269 / 284
Sheets of 1998 248 sheets · 211 usable · mean R 83.9
| Drawing | Date | g | f | R | Reading |
|---|---|---|---|---|---|
| Drawing | 01.01.1998 | 6 | 30 | 90 | counts consistent, some coordinates doubtful |
| Drawing | 02.01.1998 | 4 | 24 | 64 | counts consistent, some coordinates doubtful |
| Drawing | 03.01.1998 | 3 | 13 | 43 | counts consistent, some coordinates doubtful |
| Drawing | 04.01.1998 | 2 | 4 | 24 | all checks consistent |
| Drawing | 05.01.1998 | 1 | 2 | 12 | all checks consistent |
| Drawing | 07.01.1998 | 0 | 0 | 0 | all checks consistent |
| Drawing | 08.01.1998 | 0 | 0 | 0 | all checks consistent |
| Drawing | 10.01.1998 | 0 | 0 | 0 | all checks consistent |
| Drawing | 11.01.1998 | — | — | — | reading could not be verified |
| Drawing | 12.01.1998 | — | — | — | reading could not be verified |
| Drawing | 13.01.1998 | 3 | 43 | 73 | all checks consistent |
| Drawing | 14.01.1998 | — | — | — | reading could not be verified |
| Drawing | 15.01.1998 | 2 | 40 | 60 | all checks consistent |
| Drawing | 16.01.1998 | 2 | 17 | 37 | all checks consistent |
| Drawing | 19.01.1998 | 6 | 10 | 70 | all checks consistent |
| Drawing | 20.01.1998 | 2 | 5 | 25 | all checks consistent |
| Drawing | 21.01.1998 | 1 | 3 | 13 | all checks consistent |
| Drawing | 29.01.1998 | 5 | 19 | 69 | all checks consistent |
| Drawing | 30.01.1998 | 3 | 10 | 40 | all checks consistent |
| Drawing | 31.01.1998 | 2 | 8 | 28 | all checks consistent |
| Drawing | 01.02.1998 | 2 | 5 | 25 | all checks consistent |
| Drawing | 08.02.1998 | 3 | 6 | 36 | all checks consistent |
| Drawing | 09.02.1998 | 3 | 5 | 35 | all checks consistent |
| Drawing | 10.02.1998 | 4 | 12 | 52 | all checks consistent |
| Drawing | 11.02.1998 | 3 | 7 | 37 | all checks consistent |
| Drawing | 12.02.1998 | 5 | 19 | 69 | all checks consistent |
| Drawing | 13.02.1998 | 3 | 22 | 52 | all checks consistent |
| Drawing | 14.02.1998 | 5 | 22 | 72 | all checks consistent |
| Drawing | 15.02.1998 | 5 | 43 | 93 | all checks consistent |
| Drawing | 18.02.1998 | 4 | 20 | 60 | all checks consistent |
| Drawing | 19.02.1998 | 2 | 11 | 31 | all checks consistent |
| Drawing | 20.02.1998 | 2 | 13 | 33 | all checks consistent |
| Drawing | 21.02.1998 | 2 | 8 | 28 | all checks consistent |
| Drawing | 22.02.1998 | 3 | 7 | 37 | all checks consistent |
| Drawing | 23.02.1998 | 2 | 18 | 38 | all checks consistent |
| Drawing | 24.02.1998 | 3 | 23 | 53 | all checks consistent |
| Drawing | 25.02.1998 | 4 | 37 | 77 | all checks consistent |
| Drawing | 27.02.1998 | 5 | 20 | 70 | all checks consistent |
| Drawing | 28.02.1998 | 4 | 35 | 75 | all checks consistent |
| Drawing | 01.03.1998 | 6 | 39 | 99 | counts consistent, some coordinates doubtful |
| Drawing | 03.03.1998 | 2 | 34 | 54 | all checks consistent |
| Drawing | 04.03.1998 | 2 | 23 | 43 | all checks consistent |
| Drawing | 05.03.1998 | 3 | 28 | 58 | all checks consistent |
| Drawing | 07.03.1998 | 5 | 24 | 74 | all checks consistent |
| Drawing | 08.03.1998 | 5 | 16 | 66 | all checks consistent |
| Drawing | 13.03.1998 | 5 | 30 | 80 | all checks consistent |
| Drawing | 14.03.1998 | 6 | 49 | 109 | all checks consistent |
| Drawing | 15.03.1998 | 3 | 49 | 79 | all checks consistent |
| Drawing | 16.03.1998 | 3 | 58 | 88 | all checks consistent |
| Drawing | 17.03.1998 | 3 | 39 | 69 | all checks consistent |
| Drawing | 24.03.1998 | 4 | 42 | 82 | all checks consistent |
| Drawing | 25.03.1998 | 5 | 45 | 95 | counts consistent, some coordinates doubtful |
| Drawing | 31.03.1998 | 4 | 44 | 84 | all checks consistent |
| Drawing | 01.04.1998 | 3 | 32 | 62 | all checks consistent |
| Drawing | 02.04.1998 | 4 | 19 | 59 | all checks consistent |
| Drawing | 03.04.1998 | 4 | 37 | 77 | all checks consistent |
| Drawing | 04.04.1998 | — | — | — | reading could not be verified |
| Drawing | 05.04.1998 | 4 | 40 | 80 | all checks consistent |
| Drawing | 06.04.1998 | 5 | 24 | 74 | all checks consistent |
| Drawing | 07.04.1998 | 8 | 46 | 126 | counts consistent, some coordinates doubtful |
| Drawing | 08.04.1998 | 9 | 65 | 155 | counts consistent, some coordinates doubtful |
| Drawing | 09.04.1998 | 8 | 39 | 119 | all checks consistent |
| Drawing | 11.04.1998 | 7 | 39 | 109 | all checks consistent |
| Drawing | 12.04.1998 | 5 | 33 | 83 | counts consistent, some coordinates doubtful |
| Drawing | 13.04.1998 | 7 | 31 | 101 | all checks consistent |
| Drawing | 14.04.1998 | — | — | — | reading could not be verified |
| Drawing | 15.04.1998 | — | — | — | reading could not be verified |
| Drawing | 16.04.1998 | 5 | 25 | 75 | all checks consistent |
| Drawing | 17.04.1998 | 4 | 15 | 55 | all checks consistent |
| Drawing | 18.04.1998 | 2 | 14 | 34 | all checks consistent |
| Drawing | 20.04.1998 | 2 | 27 | 47 | all checks consistent |
| Drawing | 24.04.1998 | 1 | 2 | 12 | all checks consistent |
| Drawing | 29.04.1998 | 2 | 23 | 43 | all checks consistent |
| Drawing | 30.04.1998 | 4 | 27 | 67 | all checks consistent |
| Drawing | 02.05.1998 | 4 | 44 | 84 | all checks consistent |
| Drawing | 04.05.1998 | 3 | 75 | 105 | all checks consistent |
| Drawing | 05.05.1998 | 4 | 75 | 115 | all checks consistent |
| Drawing | 06.05.1998 | 3 | 36 | 66 | all checks consistent |
| Drawing | 09.05.1998 | 3 | 24 | 54 | counts consistent, some coordinates doubtful |
| Drawing | 16.05.1998 | 3 | 112 | 142 | all checks consistent |
| Drawing | 18.05.1998 | 3 | 49 | 79 | all checks consistent |
| Drawing | 23.05.1998 | 3 | 13 | 43 | counts consistent, some coordinates doubtful |
| Drawing | 24.05.1998 | 2 | 29 | 49 | all checks consistent |
| Drawing | 25.05.1998 | 3 | 32 | 62 | all checks consistent |
| Drawing | 26.05.1998 | 3 | 17 | 47 | counts consistent, some coordinates doubtful |
| Drawing | 27.05.1998 | 4 | 20 | 60 | all checks consistent |
| Drawing | 28.05.1998 | 2 | 9 | 29 | counts consistent, some coordinates doubtful |
| Drawing | 31.05.1998 | 4 | 33 | 73 | all checks consistent |
| Drawing | 01.06.1998 | 3 | 30 | 60 | all checks consistent |
| Drawing | 02.06.1998 | 4 | 26 | 66 | all checks consistent |
| Drawing | 03.06.1998 | 3 | 26 | 56 | all checks consistent |
| Drawing | 04.06.1998 | 6 | 34 | 94 | all checks consistent |
| Drawing | 05.06.1998 | 5 | 37 | 87 | all checks consistent |
| Drawing | 07.06.1998 | — | — | — | reading could not be verified |
| Drawing | 09.06.1998 | 6 | 27 | 87 | all checks consistent |
| Drawing | 10.06.1998 | — | — | — | reading could not be verified |
| Drawing | 11.06.1998 | 5 | 29 | 79 | counts consistent, some coordinates doubtful |
| Drawing | 12.06.1998 | 7 | 41 | 111 | all checks consistent |
| Drawing | 13.06.1998 | — | — | — | reading could not be verified |
| Drawing | 14.06.1998 | 8 | 17 | 97 | all checks consistent |
| Drawing | 15.06.1998 | 4 | 23 | 63 | all checks consistent |
| Drawing | 16.06.1998 | 4 | 24 | 64 | all checks consistent |
| Drawing | 17.06.1998 | 5 | 28 | 78 | all checks consistent |
| Drawing | 18.06.1998 | 5 | 24 | 74 | all checks consistent |
| Drawing | 19.06.1998 | 5 | 16 | 66 | all checks consistent |
| Drawing | 20.06.1998 | 5 | 19 | 69 | counts consistent, some coordinates doubtful |
| Drawing | 22.06.1998 | 3 | 26 | 56 | all checks consistent |
| Drawing | 23.06.1998 | — | — | — | reading could not be verified |
| Drawing | 24.06.1998 | 4 | 19 | 59 | counts consistent, some coordinates doubtful |
| Drawing | 25.06.1998 | 7 | 27 | 97 | all checks consistent |
| Drawing | 26.06.1998 | 6 | 47 | 107 | counts consistent, some coordinates doubtful |
| Drawing | 27.06.1998 | — | — | — | reading could not be verified |
| Drawing | 28.06.1998 | — | — | — | reading could not be verified |
| Drawing | 29.06.1998 | — | — | — | reading could not be verified |
| Drawing | 30.06.1998 | 9 | 43 | 133 | all checks consistent |
| Drawing | 01.07.1998 | 11 | 75 | 185 | counts consistent, some coordinates doubtful |
| Drawing | 02.07.1998 | 9 | 26 | 116 | counts consistent, some coordinates doubtful |
| Drawing | 03.07.1998 | 9 | 51 | 141 | counts consistent, some coordinates doubtful |
| Drawing | 04.07.1998 | 10 | 58 | 158 | counts consistent, some coordinates doubtful |
| Drawing | 05.07.1998 | 8 | 45 | 125 | counts consistent, some coordinates doubtful |
| Drawing | 06.07.1998 | — | — | — | reading could not be verified |
| Drawing | 07.07.1998 | 7 | 34 | 104 | counts consistent, some coordinates doubtful |
| Drawing | 08.07.1998 | 5 | 13 | 63 | counts consistent, some coordinates doubtful |
| Drawing | 10.07.1998 | 6 | 20 | 80 | all checks consistent |
| Drawing | 11.07.1998 | 6 | 23 | 83 | all checks consistent |
| Drawing | 12.07.1998 | 6 | 22 | 82 | counts consistent, some coordinates doubtful |
| Drawing | 13.07.1998 | 4 | 35 | 75 | all checks consistent |
| Drawing | 14.07.1998 | 4 | 21 | 61 | all checks consistent |
| Drawing | 15.07.1998 | 5 | 19 | 69 | all checks consistent |
| Drawing | 16.07.1998 | 5 | 25 | 75 | counts consistent, some coordinates doubtful |
| Drawing | 18.07.1998 | — | — | — | reading could not be verified |
| Drawing | 19.07.1998 | 3 | 32 | 62 | all checks consistent |
| Drawing | 20.07.1998 | 6 | 48 | 108 | all checks consistent |
| Drawing | 21.07.1998 | — | — | — | reading could not be verified |
| Drawing | 22.07.1998 | 8 | 44 | 124 | all checks consistent |
| Drawing | 23.07.1998 | — | — | — | reading could not be verified |
| Drawing | 24.07.1998 | 5 | 40 | 90 | all checks consistent |
| Drawing | 25.07.1998 | 5 | 38 | 88 | all checks consistent |
| Drawing | 26.07.1998 | 5 | 45 | 95 | all checks consistent |
| Drawing | 27.07.1998 | 5 | 32 | 82 | all checks consistent |
| Drawing | 28.07.1998 | 6 | 48 | 108 | all checks consistent |
| Drawing | 29.07.1998 | 6 | 41 | 101 | all checks consistent |
| Drawing | 30.07.1998 | 6 | 27 | 87 | all checks consistent |
| Drawing | 31.07.1998 | — | — | — | reading could not be verified |
| Drawing | 01.08.1998 | — | — | — | reading could not be verified |
| Drawing | 02.08.1998 | 6 | 9 | 69 | counts consistent, some coordinates doubtful |
| Drawing | 03.08.1998 | — | — | — | reading could not be verified |
| Drawing | 04.08.1998 | 4 | 21 | 61 | all checks consistent |
| Drawing | 05.08.1998 | 4 | 25 | 65 | all checks consistent |
| Drawing | 06.08.1998 | 6 | 73 | 133 | all checks consistent |
| Drawing | 07.08.1998 | 7 | 54 | 124 | counts consistent, some coordinates doubtful |
| Drawing | 08.08.1998 | 5 | 71 | 121 | counts consistent, some coordinates doubtful |
| Drawing | 09.08.1998 | — | — | — | reading could not be verified |
| Drawing | 10.08.1998 | 6 | 73 | 133 | all checks consistent |
| Drawing | 11.08.1998 | 6 | 68 | 128 | counts consistent, some coordinates doubtful |
| Drawing | 12.08.1998 | 7 | 70 | 140 | all checks consistent |
| Drawing | 13.08.1998 | 10 | 71 | 171 | all checks consistent |
| Drawing | 14.08.1998 | — | — | — | reading could not be verified |
| Drawing | 15.08.1998 | 6 | 32 | 92 | all checks consistent |
| Drawing | 16.08.1998 | — | — | — | reading could not be verified |
| Drawing | 17.08.1998 | 6 | 44 | 104 | all checks consistent |
| Drawing | 18.08.1998 | 7 | 22 | 92 | counts consistent, some coordinates doubtful |
| Drawing | 19.08.1998 | 9 | 29 | 119 | all checks consistent |
| Drawing | 20.08.1998 | 7 | 34 | 104 | all checks consistent |
| Drawing | 21.08.1998 | 7 | 33 | 103 | all checks consistent |
| Drawing | 22.08.1998 | 8 | 40 | 120 | counts consistent, some coordinates doubtful |
| Drawing | 23.08.1998 | — | — | — | reading could not be verified |
| Drawing | 24.08.1998 | 6 | 40 | 100 | all checks consistent |
| Drawing | 25.08.1998 | — | — | — | reading could not be verified |
| Drawing | 27.08.1998 | 8 | 69 | 149 | counts consistent, some coordinates doubtful |
| Drawing | 28.08.1998 | 7 | 58 | 128 | counts consistent, some coordinates doubtful |
| Drawing | 29.08.1998 | 8 | 85 | 165 | all checks consistent |
| Drawing | 31.08.1998 | 6 | 76 | 136 | counts consistent, some coordinates doubtful |
| Drawing | 01.09.1998 | 5 | 125 | 175 | counts consistent, some coordinates doubtful |
| Drawing | 02.09.1998 | 6 | 70 | 130 | all checks consistent |
| Drawing | 03.09.1998 | 5 | 42 | 92 | all checks consistent |
| Drawing | 04.09.1998 | 4 | 61 | 101 | all checks consistent |
| Drawing | 06.09.1998 | 7 | 93 | 163 | counts consistent, some coordinates doubtful |
| Drawing | 07.09.1998 | — | — | — | reading could not be verified |
| Drawing | 08.09.1998 | 8 | 65 | 145 | counts consistent, some coordinates doubtful |
| Drawing | 10.09.1998 | — | — | — | reading could not be verified |
| Drawing | 12.09.1998 | 7 | 57 | 127 | counts consistent, some coordinates doubtful |
| Drawing | 13.09.1998 | 7 | 41 | 111 | all checks consistent |
| Drawing | 14.09.1998 | 8 | 50 | 130 | all checks consistent |
| Drawing | 15.09.1998 | 5 | 41 | 91 | counts consistent, some coordinates doubtful |
| Drawing | 16.09.1998 | 6 | 21 | 81 | all checks consistent |
| Drawing | 17.09.1998 | 8 | 30 | 110 | all checks consistent |
| Drawing | 18.09.1998 | — | — | — | reading could not be verified |
| Drawing | 19.09.1998 | 7 | 46 | 116 | all checks consistent |
| Drawing | 20.09.1998 | — | — | — | reading could not be verified |
| Drawing | 21.09.1998 | 11 | 75 | 185 | counts consistent, some coordinates doubtful |
| Drawing | 22.09.1998 | 8 | 68 | 148 | all checks consistent |
| Drawing | 25.09.1998 | 9 | 65 | 155 | all checks consistent |
| Drawing | 26.09.1998 | 10 | 61 | 161 | all checks consistent |
| Drawing | 27.09.1998 | 8 | 40 | 120 | counts consistent, some coordinates doubtful |
| Drawing | 28.09.1998 | 12 | 37 | 157 | counts consistent, some coordinates doubtful |
| Drawing | 29.09.1998 | — | — | — | reading could not be verified |
| Drawing | 01.10.1998 | 2 | 8 | 28 | all checks consistent |
| Drawing | 02.10.1998 | 2 | 7 | 27 | counts consistent, some coordinates doubtful |
| Drawing | 03.10.1998 | 5 | 12 | 62 | all checks consistent |
| Drawing | 05.10.1998 | 2 | 14 | 34 | all checks consistent |
| Drawing | 06.10.1998 | 6 | 30 | 90 | all checks consistent |
| Drawing | 07.10.1998 | 5 | 55 | 105 | counts consistent, some coordinates doubtful |
| Drawing | 08.10.1998 | 6 | 58 | 118 | counts consistent, some coordinates doubtful |
| Drawing | 09.10.1998 | 6 | 63 | 123 | all checks consistent |
| Drawing | 10.10.1998 | 3 | 57 | 87 | all checks consistent |
| Drawing | 11.10.1998 | 4 | 39 | 79 | all checks consistent |
| Drawing | 12.10.1998 | 2 | 24 | 44 | counts consistent, some coordinates doubtful |
| Drawing | 13.10.1998 | 4 | 42 | 82 | all checks consistent |
| Drawing | 17.10.1998 | 7 | 60 | 130 | all checks consistent |
| Drawing | 18.10.1998 | 7 | 76 | 146 | all checks consistent |
| Drawing | 19.10.1998 | — | — | — | reading could not be verified |
| Drawing | 20.10.1998 | 6 | 51 | 111 | all checks consistent |
| Drawing | 22.10.1998 | 3 | 35 | 65 | counts consistent, some coordinates doubtful |
| Drawing | 23.10.1998 | 3 | 34 | 64 | all checks consistent |
| Drawing | 24.10.1998 | 3 | 24 | 54 | all checks consistent |
| Drawing | 25.10.1998 | 3 | 8 | 38 | all checks consistent |
| Drawing | 29.10.1998 | 6 | 15 | 75 | all checks consistent |
| Drawing | 30.10.1998 | 6 | 24 | 84 | all checks consistent |
| Drawing | 31.10.1998 | 4 | 11 | 51 | all checks consistent |
| Drawing | 01.11.1998 | 4 | 15 | 55 | all checks consistent |
| Drawing | 02.11.1998 | 3 | 17 | 47 | all checks consistent |
| Drawing | 03.11.1998 | 4 | 24 | 64 | all checks consistent |
| Drawing | 04.11.1998 | 7 | 60 | 130 | all checks consistent |
| Drawing | 05.11.1998 | 6 | 72 | 132 | all checks consistent |
| Drawing | 06.11.1998 | 6 | 48 | 108 | all checks consistent |
| Drawing | 07.11.1998 | 7 | 73 | 143 | counts consistent, some coordinates doubtful |
| Drawing | 09.11.1998 | 4 | 45 | 85 | all checks consistent |
| Drawing | 10.11.1998 | — | — | — | reading could not be verified |
| Drawing | 11.11.1998 | 5 | 25 | 75 | all checks consistent |
| Drawing | 12.11.1998 | — | — | — | reading could not be verified |
| Drawing | 15.11.1998 | — | — | — | reading could not be verified |
| Drawing | 16.11.1998 | 3 | 18 | 48 | all checks consistent |
| Drawing | 17.11.1998 | 3 | 22 | 52 | counts consistent, some coordinates doubtful |
| Drawing | 18.11.1998 | 4 | 24 | 64 | counts consistent, some coordinates doubtful |
| Drawing | 19.11.1998 | 3 | 16 | 46 | all checks consistent |
| Drawing | 24.11.1998 | 5 | 21 | 71 | all checks consistent |
| Drawing | 04.12.1998 | 7 | 34 | 104 | all checks consistent |
| Drawing | 06.12.1998 | — | — | — | reading could not be verified |
| Drawing | 10.12.1998 | 8 | 47 | 127 | all checks consistent |
| Drawing | 13.12.1998 | — | — | — | reading could not be verified |
| Drawing | 14.12.1998 | 5 | 65 | 115 | all checks consistent |
| Drawing | 17.12.1998 | 4 | 24 | 64 | all checks consistent |
| Drawing | 21.12.1998 | 5 | 34 | 84 | all checks consistent |
| Drawing | 22.12.1998 | 2 | 8 | 28 | all checks consistent |
| Drawing | 27.12.1998 | 7 | 76 | 146 | counts consistent, some coordinates doubtful |
| Drawing | 28.12.1998 | 5 | 56 | 106 | all checks consistent |
| Drawing | 29.12.1998 | — | — | — | reading could not be verified |
Click a date for the group table and the drawing. “—”: the reading of the sheet could not be verified, numbers are not shown; see the drawing.