Daily Sunspot Evaluation
Observation Sheet Friday, 9 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)
- 4
- Number of spots (f)
- 39
- Relative number (R)
- 79
- Observer
- GA
- Reading
- all checks consistent
- File
- 19771209.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 2 | 27 | 66E | 94 | 65E | ||
| 2 | E – 30 | -25 | 24E | 134 | 23E | ||
| 3 | G – 4 | -22 | 43W | 204 | 44W | ||
| 4 | J – 3 | -17 | 32W | 190 | 33W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.