Daily Sunspot Evaluation
Observation Sheet Thursday, 1 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)
- 6
- Number of spots (f)
- 15
- Relative number (R)
- 75
- Observer
- GA
- Reading
- all checks consistent
- File
- 19770901.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 1 | 26 | 70E | 316 | 67E | ||
| 2 | A – 2 | -33 | 09W | 35 | 12W | ||
| 3 | A – 1 | -29 | 65W | 91 | 68W | ||
| 4 | ? – 4 | 19 | 44W | 70 | 47W | ||
| 5 | A – 1 | 22 | 28W | 54 | 31W | ||
| 6 | A – 6 | 27 | 42W | 68 | 45W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.