Daily Sunspot Evaluation
Observation Sheet Thursday, 12 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)
- 17
- Number of spots (f)
- 102
- Relative number (R)
- 272
- Observer
- GA
- Reading
- counts consistent, some coordinates doubtful
- File
- 19781012.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 14 | 09E | 57 | 06E | ||
| 2 | A – 1 | 22 | 25E | 41 | 22E | ||
| 3 | ? – 4 | 34 | 72E | 354 | 69E | ||
| 4 | ? – 1 | 30 | 56E | 10 | 52E | ||
| 5 | D – 11 | 21 | 28E | 37 | 26E | ||
| 6 | A – 1 | -20 | 63E | 3 | 60E | ||
| 7 | D – 11 | -16 | 43E | 29 ⚠ | 40E | ||
| 8 | A – 2 | -20 | 54E | 12 | 51E | ||
| 9 | C – 8 | -18 | 29E | 37 | 26E | ||
| 10 | D – 15 | -19 | 21E | 45 | 18E | ||
| 11 | B – 4 | -24 | 17E | 49 | 14E | ||
| 12 | A – 1 | -16 | 12E | 54 | 08E | ||
| 13 | ? – 5 | -20 | 03E | 63 | 00 | ||
| 14 | B – 5 | -16 | 00 | 66 | 03W | ||
| 15 | F – 23 | -24 | 52W | 118 | 55W | ||
| 16 | C – 8 | 23 | 37W | 103 | 40W | ||
| 17 | ? – 1 | 18 | 04W | 67 | 04W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.