Daily Sunspot Evaluation
Observation Sheet Friday, 20 October 1978
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)
- 12
- Number of spots (f)
- 120
- Relative number (R)
- 240
- Observer
- GA
- Reading
- counts consistent, some coordinates doubtful
- File
- 19781020.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 3 | 30 | 03E | 317 | 01E | ||
| 2 | J – 1 | 33 | 51E | 269 | 43E | ||
| 3 | E – 30 | 28 | 57E | 263 | 55E | ||
| 4 | C – 10 | 16 | 23E | 293 ⚠ | 25E | l | |
| 5 | J – 3 | -20 | 46E | 274 | 44E | ||
| 6 | C – 8 | -16 | 13E | 307 | 11E | v | |
| 7 | D – 19 | -28 | 13E | 307 | 11E | ||
| 8 | E – 33 | -23 | 47W | 7 | 48W | ||
| 9 | J – 4 | 18 | 79W | 37 | 79W | ||
| 10 | J – 1 | 27 | 48W | 8 | 50W | ||
| 11 | J – 4 | 16 | 08W | 328 | 10W | ||
| 12 | A – 4 | 19 | 02W | 322 | 04W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.