Daily Sunspot Evaluation
Observation Sheet Thursday, 18 October 1979
There is no typed record for this day. The values below were read by computer from the table on the sheet; when in doubt, see the drawing. Details →
- Number of groups (g)
- 13
- Number of spots (f)
- 100
- Relative number (R)
- 230
- Observer
- ED
- Reading
- all checks consistent
- File
- 19791018.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 26 | 27 | 27E | 180 | 27E | 271 | |
| 2 | A – 2 | 18 | 12E | 195 | 12E | 282 | |
| 3 | ? – 1 | 19 | 83E | 124 | 83E | 283 | |
| 4 | A – 6 | 6 | 16E | 191 | 16E | 272 | |
| 5 | E – 13 | -11 | 63E | 144 | 63E | 279 | |
| 6 | J – 1 | -13 | 48E | 159 | 48E | 276 | |
| 7 | A – 1 | -14 | 34E | 173 | 34E | 281 | |
| 8 | B – 2 | -27 | 40E | 167 | 40E | 277 | |
| 9 | J – 1 | -7 | 01E | 206 | 01E | 266 | |
| 10 | B – 3 | -18 | 09W | 216 | 09W | 278 | |
| 11 | J – 1 | 11 | 29W | 236 | 29W | 261 | |
| 12 | E – 19 | 26 | 44W | 251 | 44W | 257 | |
| 13 | E – 24 | 32 | 15W | 222 | 15W | 262 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.