Daily Sunspot Evaluation
Observation Sheet Tuesday, 6 September 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)
- 3
- Number of spots (f)
- 15
- Relative number (R)
- 45
- Observer
- GA
- Reading
- all checks consistent
- File
- 19770906.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 11 | 25 | 04E | 315 | 06E | 8536 | |
| 2 | ? – 1 | 21 | 79E | 242 | 74E | ||
| 3 | C – 3 | 15 | 25W | 344 | 28W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.