Daily Sunspot Evaluation
Observation Sheet Sunday, 28 August 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)
- 22
- Relative number (R)
- 52
- Observer
- GT
- Reading
- all checks consistent
- File
- 19770828.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 12 | -27 | 15W | 93 | 18W | ||
| 2 | ? – 6 | -26 | 24W | 102 | 23W | ||
| 3 | B – 4 | 25 | 40W | 118 | 43W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.