Daily Sunspot Evaluation
Observation Sheet Thursday, 29 August 1957
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)
- 11
- Number of spots (f)
- 107
- Relative number (R)
- 217
- Observer
- MH
- Reading
- all checks consistent
- File
- 19570829.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | F – 17 | 25 | 34 | |
| 2 | B – 5 | 26 | 49 | |
| 3 | B – 14 | 18 | 38 | |
| 4 | H – 3 | 14 | 30 | |
| 5 | E – 15 | -29 | 24 | |
| 6 | A – 2 | -28 | 17 | |
| 7 | A – 3 | -24 | 22 | |
| 8 | C – 13 | -13 | 19 | |
| 9 | C – 9 | -24 | 31 | |
| 10 | J – 2 | -14 | 49 | |
| 11 | C – 24 | 12 | 3 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.