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 1987 254 sheets · 221 usable · mean R 30.7
| Drawing | Date | g | f | R | Reading |
|---|---|---|---|---|---|
| Drawing | 02.01.1987 | 1 | 12 | 22 | all checks consistent |
| Drawing | 05.01.1987 | 1 | 1 | 11 | all checks consistent |
| Drawing | 06.01.1987 | 1 | 1 | 11 | all checks consistent |
| Drawing | 10.01.1987 | 0 | 0 | 0 | all checks consistent |
| Drawing | 12.01.1987 | 0 | 0 | 0 | all checks consistent |
| Drawing | 13.01.1987 | 0 | 0 | 0 | all checks consistent |
| Drawing | 14.01.1987 | 1 | 1 | 11 | all checks consistent |
| Drawing | 16.01.1987 | 0 | 0 | 0 | all checks consistent |
| Drawing | 19.01.1987 | 1 | 1 | 11 | all checks consistent |
| Drawing | 22.01.1987 | 1 | 15 | 25 | all checks consistent |
| Drawing | 25.01.1987 | 1 | 2 | 12 | all checks consistent |
| Drawing | 26.01.1987 | 2 | 5 | 25 | all checks consistent |
| Drawing | 29.01.1987 | 2 | 2 | 22 | all checks consistent |
| Drawing | 05.02.1987 | 0 | 0 | 0 | all checks consistent |
| Drawing | 06.02.1987 | 0 | 0 | 0 | all checks consistent |
| Drawing | 09.02.1987 | 0 | 0 | 0 | all checks consistent |
| Drawing | 10.02.1987 | 0 | 0 | 0 | all checks consistent |
| Drawing | 11.02.1987 | 0 | 0 | 0 | all checks consistent |
| Drawing | 12.02.1987 | 0 | 0 | 0 | all checks consistent |
| Drawing | 13.02.1987 | 0 | 0 | 0 | all checks consistent |
| Drawing | 15.02.1987 | — | — | — | reading could not be verified |
| Drawing | 16.02.1987 | 0 | 0 | 0 | all checks consistent |
| Drawing | 17.02.1987 | 0 | 0 | 0 | all checks consistent |
| Drawing | 19.02.1987 | 0 | 0 | 0 | all checks consistent |
| Drawing | 20.02.1987 | 1 | 1 | 11 | all checks consistent |
| Drawing | 21.02.1987 | 0 | 0 | 0 | all checks consistent |
| Drawing | 22.02.1987 | — | — | — | reading could not be verified |
| Drawing | 23.02.1987 | 0 | 0 | 0 | all checks consistent |
| Drawing | 25.02.1987 | 0 | 0 | 0 | all checks consistent |
| Drawing | 26.02.1987 | 2 | 2 | 22 | all checks consistent |
| Drawing | 27.02.1987 | 1 | 1 | 11 | all checks consistent |
| Drawing | 28.02.1987 | 1 | 1 | 11 | all checks consistent |
| Drawing | 01.03.1987 | 1 | 1 | 11 | all checks consistent |
| Drawing | 02.03.1987 | 2 | 5 | 25 | counts consistent, some coordinates doubtful |
| Drawing | 11.03.1987 | 0 | 0 | 0 | all checks consistent |
| Drawing | 13.03.1987 | 0 | 0 | 0 | all checks consistent |
| Drawing | 16.03.1987 | 1 | 1 | 11 | all checks consistent |
| Drawing | 19.03.1987 | 1 | 3 | 13 | all checks consistent |
| Drawing | 20.03.1987 | 0 | 0 | 0 | all checks consistent |
| Drawing | 21.03.1987 | — | — | — | reading could not be verified |
| Drawing | 22.03.1987 | 1 | 6 | 16 | all checks consistent |
| Drawing | 26.03.1987 | 1 | 1 | 11 | all checks consistent |
| Drawing | 27.03.1987 | 1 | 1 | 11 | all checks consistent |
| Drawing | 28.03.1987 | — | — | — | reading could not be verified |
| Drawing | 29.03.1987 | 2 | 3 | 23 | all checks consistent |
| Drawing | 30.03.1987 | 1 | 6 | 16 | all checks consistent |
| Drawing | 31.03.1987 | 1 | 6 | 16 | all checks consistent |
| Drawing | 01.04.1987 | 1 | 2 | 12 | all checks consistent |
| Drawing | 02.04.1987 | 1 | 2 | 12 | all checks consistent |
| Drawing | 03.04.1987 | 1 | 1 | 11 | all checks consistent |
| Drawing | 04.04.1987 | 2 | 2 | 22 | all checks consistent |
| Drawing | 05.04.1987 | 2 | 10 | 30 | all checks consistent |
| Drawing | 06.04.1987 | — | — | — | reading could not be verified |
| Drawing | 07.04.1987 | 3 | 23 | 53 | all checks consistent |
| Drawing | 08.04.1987 | 4 | 30 | 70 | all checks consistent |
| Drawing | 09.04.1987 | 4 | 42 | 82 | counts consistent, some coordinates doubtful |
| Drawing | 10.04.1987 | 4 | 34 | 74 | all checks consistent |
| Drawing | 14.04.1987 | 4 | 21 | 61 | all checks consistent |
| Drawing | 17.04.1987 | 2 | 21 | 41 | all checks consistent |
| Drawing | 20.04.1987 | 0 | 0 | 0 | all checks consistent |
| Drawing | 21.04.1987 | 1 | 4 | 14 | all checks consistent |
| Drawing | 24.04.1987 | — | — | — | reading could not be verified |
| Drawing | 25.04.1987 | 2 | 4 | 24 | all checks consistent |
| Drawing | 26.04.1987 | — | — | — | reading could not be verified |
| Drawing | 27.04.1987 | 1 | 2 | 12 | all checks consistent |
| Drawing | 02.05.1987 | 3 | 9 | 39 | all checks consistent |
| Drawing | 03.05.1987 | 2 | 6 | 26 | all checks consistent |
| Drawing | 04.05.1987 | 2 | 2 | 22 | counts consistent, some coordinates doubtful |
| Drawing | 05.05.1987 | 2 | 3 | 23 | all checks consistent |
| Drawing | 06.05.1987 | 3 | 6 | 36 | all checks consistent |
| Drawing | 07.05.1987 | — | — | — | reading could not be verified |
| Drawing | 08.05.1987 | 1 | 10 | 20 | all checks consistent |
| Drawing | 10.05.1987 | — | — | — | reading could not be verified |
| Drawing | 11.05.1987 | 2 | 16 | 36 | all checks consistent |
| Drawing | 12.05.1987 | 1 | 5 | 15 | all checks consistent |
| Drawing | 13.05.1987 | 2 | 6 | 26 | all checks consistent |
| Drawing | 14.05.1987 | — | — | — | reading could not be verified |
| Drawing | 15.05.1987 | 3 | 5 | 35 | all checks consistent |
| Drawing | 16.05.1987 | 3 | 12 | 42 | all checks consistent |
| Drawing | 17.05.1987 | — | — | — | reading could not be verified |
| Drawing | 18.05.1987 | 3 | 45 | 75 | all checks consistent |
| Drawing | 19.05.1987 | 3 | 20 | 50 | all checks consistent |
| Drawing | 20.05.1987 | — | — | — | reading could not be verified |
| Drawing | 21.05.1987 | 2 | 30 | 50 | all checks consistent |
| Drawing | 22.05.1987 | 1 | 17 | 27 | all checks consistent |
| Drawing | 23.05.1987 | — | — | — | reading could not be verified |
| Drawing | 24.05.1987 | 1 | 29 | 39 | all checks consistent |
| Drawing | 25.05.1987 | 1 | 24 | 34 | all checks consistent |
| Drawing | 26.05.1987 | — | — | — | reading could not be verified |
| Drawing | 27.05.1987 | 2 | 12 | 32 | all checks consistent |
| Drawing | 28.05.1987 | 1 | 8 | 18 | all checks consistent |
| Drawing | 29.05.1987 | 1 | 6 | 16 | all checks consistent |
| Drawing | 30.05.1987 | 1 | 6 | 16 | all checks consistent |
| Drawing | 01.06.1987 | 1 | 5 | 15 | all checks consistent |
| Drawing | 02.06.1987 | 1 | 2 | 12 | all checks consistent |
| Drawing | 03.06.1987 | 0 | 0 | 0 | all checks consistent |
| Drawing | 04.06.1987 | 0 | 0 | 0 | all checks consistent |
| Drawing | 05.06.1987 | 0 | 0 | 0 | all checks consistent |
| Drawing | 06.06.1987 | 0 | 0 | 0 | all checks consistent |
| Drawing | 08.06.1987 | 0 | 0 | 0 | all checks consistent |
| Drawing | 09.06.1987 | 0 | 0 | 0 | all checks consistent |
| Drawing | 10.06.1987 | 0 | 0 | 0 | all checks consistent |
| Drawing | 11.06.1987 | 0 | 0 | 0 | all checks consistent |
| Drawing | 12.06.1987 | 0 | 0 | 0 | all checks consistent |
| Drawing | 13.06.1987 | 1 | 1 | 11 | all checks consistent |
| Drawing | 14.06.1987 | 1 | 1 | 11 | all checks consistent |
| Drawing | 15.06.1987 | 1 | 1 | 11 | all checks consistent |
| Drawing | 16.06.1987 | 0 | 0 | 0 | all checks consistent |
| Drawing | 17.06.1987 | — | — | — | reading could not be verified |
| Drawing | 19.06.1987 | 1 | 2 | 12 | all checks consistent |
| Drawing | 20.06.1987 | 2 | 3 | 23 | all checks consistent |
| Drawing | 21.06.1987 | 2 | 4 | 24 | all checks consistent |
| Drawing | 22.06.1987 | 3 | 19 | 49 | all checks consistent |
| Drawing | 23.06.1987 | 2 | 17 | 37 | all checks consistent |
| Drawing | 24.06.1987 | 2 | 19 | 39 | all checks consistent |
| Drawing | 25.06.1987 | 3 | 18 | 48 | all checks consistent |
| Drawing | 26.06.1987 | 3 | 14 | 44 | all checks consistent |
| Drawing | 27.06.1987 | 3 | 5 | 35 | all checks consistent |
| Drawing | 28.06.1987 | 3 | 8 | 38 | all checks consistent |
| Drawing | 29.06.1987 | 2 | 4 | 24 | all checks consistent |
| Drawing | 30.06.1987 | 0 | 0 | 0 | all checks consistent |
| Drawing | 01.07.1987 | 0 | 0 | 0 | all checks consistent |
| Drawing | 02.07.1987 | 0 | 0 | 0 | all checks consistent |
| Drawing | 03.07.1987 | 0 | 0 | 0 | all checks consistent |
| Drawing | 04.07.1987 | 0 | 0 | 0 | all checks consistent |
| Drawing | 08.07.1987 | 1 | 2 | 12 | all checks consistent |
| Drawing | 09.07.1987 | 1 | 5 | 15 | all checks consistent |
| Drawing | 10.07.1987 | 1 | 1 | 11 | all checks consistent |
| Drawing | 11.07.1987 | 0 | 0 | 0 | all checks consistent |
| Drawing | 13.07.1987 | 0 | 0 | 0 | all checks consistent |
| Drawing | 14.07.1987 | 0 | 0 | 0 | all checks consistent |
| Drawing | 15.07.1987 | 0 | 0 | 0 | all checks consistent |
| Drawing | 16.07.1987 | 2 | 4 | 24 | counts consistent, some coordinates doubtful |
| Drawing | 17.07.1987 | 1 | 3 | 13 | all checks consistent |
| Drawing | 18.07.1987 | 2 | 10 | 30 | all checks consistent |
| Drawing | 19.07.1987 | 2 | 4 | 24 | all checks consistent |
| Drawing | 20.07.1987 | 2 | 13 | 33 | all checks consistent |
| Drawing | 21.07.1987 | 4 | 33 | 73 | all checks consistent |
| Drawing | 22.07.1987 | 6 | 59 | 119 | counts consistent, some coordinates doubtful |
| Drawing | 23.07.1987 | 7 | 46 | 116 | all checks consistent |
| Drawing | 24.07.1987 | 5 | 39 | 89 | all checks consistent |
| Drawing | 25.07.1987 | 5 | 44 | 94 | all checks consistent |
| Drawing | 26.07.1987 | 4 | 60 | 100 | all checks consistent |
| Drawing | 27.07.1987 | 4 | 44 | 84 | all checks consistent |
| Drawing | 29.07.1987 | 5 | 22 | 72 | all checks consistent |
| Drawing | 30.07.1987 | 5 | 31 | 81 | all checks consistent |
| Drawing | 31.07.1987 | — | — | — | reading could not be verified |
| Drawing | 01.08.1987 | — | — | — | reading could not be verified |
| Drawing | 02.08.1987 | 3 | 22 | 52 | counts consistent, some coordinates doubtful |
| Drawing | 03.08.1987 | 2 | 16 | 36 | all checks consistent |
| Drawing | 04.08.1987 | 2 | 17 | 37 | all checks consistent |
| Drawing | 05.08.1987 | 2 | 8 | 28 | all checks consistent |
| Drawing | 06.08.1987 | 2 | 19 | 39 | all checks consistent |
| Drawing | 07.08.1987 | — | — | — | reading could not be verified |
| Drawing | 08.08.1987 | 2 | 47 | 67 | all checks consistent |
| Drawing | 09.08.1987 | 2 | 18 | 38 | all checks consistent |
| Drawing | 10.08.1987 | 3 | 26 | 56 | all checks consistent |
| Drawing | 11.08.1987 | 4 | 16 | 56 | all checks consistent |
| Drawing | 12.08.1987 | 4 | 14 | 54 | all checks consistent |
| Drawing | 13.08.1987 | 3 | 23 | 53 | all checks consistent |
| Drawing | 14.08.1987 | 4 | 17 | 57 | all checks consistent |
| Drawing | 15.08.1987 | 3 | 18 | 48 | all checks consistent |
| Drawing | 17.08.1987 | 3 | 25 | 55 | all checks consistent |
| Drawing | 18.08.1987 | 3 | 25 | 55 | all checks consistent |
| Drawing | 19.08.1987 | 3 | 26 | 56 | all checks consistent |
| Drawing | 20.08.1987 | 3 | 44 | 74 | all checks consistent |
| Drawing | 23.08.1987 | 3 | 19 | 49 | all checks consistent |
| Drawing | 24.08.1987 | 2 | 9 | 29 | all checks consistent |
| Drawing | 25.08.1987 | 2 | 27 | 47 | all checks consistent |
| Drawing | 26.08.1987 | 2 | 21 | 41 | all checks consistent |
| Drawing | 27.08.1987 | 2 | 10 | 30 | all checks consistent |
| Drawing | 28.08.1987 | 2 | 8 | 28 | all checks consistent |
| Drawing | 29.08.1987 | 2 | 4 | 24 | all checks consistent |
| Drawing | 30.08.1987 | 1 | 1 | 11 | all checks consistent |
| Drawing | 31.08.1987 | 3 | 6 | 36 | counts consistent, some coordinates doubtful |
| Drawing | 01.09.1987 | 3 | 13 | 43 | all checks consistent |
| Drawing | 02.09.1987 | 2 | 9 | 29 | all checks consistent |
| Drawing | 03.09.1987 | 3 | 16 | 46 | all checks consistent |
| Drawing | 04.09.1987 | — | — | — | reading could not be verified |
| Drawing | 05.09.1987 | 2 | 15 | 35 | all checks consistent |
| Drawing | 06.09.1987 | — | — | — | reading could not be verified |
| Drawing | 07.09.1987 | 3 | 39 | 69 | all checks consistent |
| Drawing | 08.09.1987 | 3 | 46 | 76 | all checks consistent |
| Drawing | 09.09.1987 | 3 | 36 | 66 | all checks consistent |
| Drawing | 10.09.1987 | — | — | — | reading could not be verified |
| Drawing | 11.09.1987 | 4 | 23 | 63 | all checks consistent |
| Drawing | 12.09.1987 | 4 | 12 | 52 | all checks consistent |
| Drawing | 13.09.1987 | 2 | 7 | 27 | all checks consistent |
| Drawing | 14.09.1987 | 1 | 9 | 19 | all checks consistent |
| Drawing | 15.09.1987 | 1 | 9 | 19 | all checks consistent |
| Drawing | 16.09.1987 | — | — | — | reading could not be verified |
| Drawing | 17.09.1987 | 2 | 5 | 25 | all checks consistent |
| Drawing | 18.09.1987 | 3 | 9 | 39 | all checks consistent |
| Drawing | 19.09.1987 | 3 | 9 | 39 | all checks consistent |
| Drawing | 21.09.1987 | 2 | 5 | 25 | all checks consistent |
| Drawing | 22.09.1987 | 2 | 4 | 24 | all checks consistent |
| Drawing | 23.09.1987 | 2 | 2 | 22 | all checks consistent |
| Drawing | 24.09.1987 | 3 | 4 | 34 | all checks consistent |
| Drawing | 25.09.1987 | 1 | 2 | 12 | all checks consistent |
| Drawing | 26.09.1987 | 1 | 1 | 11 | all checks consistent |
| Drawing | 27.09.1987 | 2 | 3 | 23 | all checks consistent |
| Drawing | 28.09.1987 | — | — | — | reading could not be verified |
| Drawing | 29.09.1987 | 3 | 6 | 36 | all checks consistent |
| Drawing | 02.10.1987 | 2 | 7 | 27 | counts consistent, some coordinates doubtful |
| Drawing | 03.10.1987 | 2 | 16 | 36 | all checks consistent |
| Drawing | 04.10.1987 | — | — | — | reading could not be verified |
| Drawing | 06.10.1987 | 2 | 27 | 47 | all checks consistent |
| Drawing | 07.10.1987 | 2 | 13 | 33 | all checks consistent |
| Drawing | 08.10.1987 | 4 | 15 | 55 | all checks consistent |
| Drawing | 09.10.1987 | 3 | 7 | 37 | all checks consistent |
| Drawing | 13.10.1987 | 4 | 30 | 70 | all checks consistent |
| Drawing | 14.10.1987 | 4 | 49 | 89 | all checks consistent |
| Drawing | 15.10.1987 | 4 | 58 | 98 | all checks consistent |
| Drawing | 16.10.1987 | 4 | 53 | 93 | all checks consistent |
| Drawing | 17.10.1987 | 4 | 30 | 70 | all checks consistent |
| Drawing | 19.10.1987 | 4 | 40 | 80 | all checks consistent |
| Drawing | 20.10.1987 | 4 | 19 | 59 | all checks consistent |
| Drawing | 22.10.1987 | 3 | 14 | 44 | all checks consistent |
| Drawing | 25.10.1987 | — | — | — | reading could not be verified |
| Drawing | 26.10.1987 | — | — | — | reading could not be verified |
| Drawing | 30.10.1987 | 2 | 19 | 39 | all checks consistent |
| Drawing | 02.11.1987 | 3 | 16 | 46 | all checks consistent |
| Drawing | 03.11.1987 | 3 | 16 | 46 | all checks consistent |
| Drawing | 05.11.1987 | — | — | — | reading could not be verified |
| Drawing | 06.11.1987 | — | — | — | reading could not be verified |
| Drawing | 08.11.1987 | 3 | 6 | 36 | counts consistent, some coordinates doubtful |
| Drawing | 09.11.1987 | 3 | 6 | 36 | all checks consistent |
| Drawing | 10.11.1987 | 2 | 2 | 22 | all checks consistent |
| Drawing | 13.11.1987 | 1 | 8 | 18 | all checks consistent |
| Drawing | 14.11.1987 | — | — | — | reading could not be verified |
| Drawing | 15.11.1987 | — | — | — | reading could not be verified |
| Drawing | 16.11.1987 | 1 | 23 | 33 | all checks consistent |
| Drawing | 17.11.1987 | 2 | 6 | 26 | counts consistent, some coordinates doubtful |
| Drawing | 23.11.1987 | 5 | 51 | 101 | counts consistent, some coordinates doubtful |
| Drawing | 24.11.1987 | 5 | 67 | 117 | all checks consistent |
| Drawing | 25.11.1987 | 2 | 26 | 46 | counts consistent, some coordinates doubtful |
| Drawing | 26.11.1987 | 4 | 28 | 68 | counts consistent, some coordinates doubtful |
| Drawing | 27.11.1987 | 1 | 4 | 14 | all checks consistent |
| Drawing | 29.11.1987 | 2 | 6 | 26 | all checks consistent |
| Drawing | 01.12.1987 | — | — | — | reading could not be verified |
| Drawing | 06.12.1987 | — | — | — | reading could not be verified |
| Drawing | 08.12.1987 | 1 | 14 | 24 | all checks consistent |
| Drawing | 12.12.1987 | 0 | 0 | 0 | all checks consistent |
| Drawing | 13.12.1987 | 2 | 3 | 23 | all checks consistent |
| Drawing | 18.12.1987 | 3 | 9 | 39 | all checks consistent |
| Drawing | 19.12.1987 | 2 | 3 | 23 | all checks consistent |
| Drawing | 21.12.1987 | 2 | 2 | 22 | all checks consistent |
| Drawing | 23.12.1987 | 2 | 3 | 23 | all checks consistent |
| Drawing | 24.12.1987 | 1 | 1 | 11 | all checks consistent |
| Drawing | 25.12.1987 | 3 | 6 | 36 | all checks consistent |
| Drawing | 27.12.1987 | 1 | 21 | 31 | all checks consistent |
| Drawing | 29.12.1987 | 1 | 21 | 31 | all checks consistent |
| Drawing | 30.12.1987 | — | — | — | reading could not be verified |
| Drawing | 31.12.1987 | 3 | 20 | 50 | all checks consistent |
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.