Daily Sunspot Evaluation
Observation Sheet Tuesday, 6 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)
- 5
- Number of spots (f)
- 24
- Relative number (R)
- 74
- Observer
- FA
- Reading
- all checks consistent
- File
- 19771206.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 3 | -25 | 63E | 135 | 61E | ||
| 2 | A – 1 | -26 | 12E | 186 | 10E | ||
| 3 | G – 10 | -20 | 02W | 200 | 04W | ||
| 4 | J – 6 | 16 | 54W | 252 | 56W | ||
| 5 | J – 4 | 16 | 28W | 226 | 30W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.