Daily Sunspot Evaluation
Observation Sheet Wednesday, 13 December 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)
- 10
- Number of spots (f)
- 122
- Relative number (R)
- 222
- Observer
- GA
- Reading
- all checks consistent
- File
- 19781213.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 25 | 16E | 313 | 13E | ||
| 2 | A – 2 | -11 | 24E | 305 | 21E | ||
| 3 | J – 5 | -23 | 58E | 271 | 55E | ||
| 4 | A – 2 | -17 | 15E | 314 | 12E | ||
| 5 | E – 41 | -15 | 00 | 329 | 03W | ||
| 6 | D – 16 | -20 | 18W | 347 | 21W | ||
| 7 | J – 3 | -26 | 64W | 33 | 67W | ||
| 8 | H – 12 | -20 | 67W | 36 | 70W | ||
| 9 | J – 1 | 14 | 79W | 48 | 82W | ||
| 10 | E – 39 | 20 | 11W | 340 | 14W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.