Daily Sunspot Evaluation
Observation Sheet Monday, 12 December 1977
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)
- 6
- Number of spots (f)
- 32
- Relative number (R)
- 92
- Observer
- FA
- Reading
- counts consistent, some coordinates doubtful
- File
- 19771212.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 5 | 25 | 27E | 31 ⚠ | 26E | ||
| 2 | A – 1 | 16 | 68E | 50 | 67E | ||
| 3 | A – 1 | -21 | 48E | 70 | 47E | ||
| 4 | ? – 9 | -28 | 07W | 125 | 08W | ||
| 5 | E – 15 | -26 | 18W | 136 | 19W | ||
| 6 | ? – 1 | -24 | 80W | 198 | 81W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.