Daily Sunspot Evaluation
Observation Sheet Wednesday, 15 August 1951
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)
- 24
- Relative number (R)
- 84
- Observer
- MH
- Reading
- all checks consistent
- File
- 19510815.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | A – 1 | 0.94 | 124 | |
| 2 | B – 7 | 0.82 | 133 | |
| 3 | C – 8 | 0.52 | 248 | |
| 4 | J – 1 | 0.95 | 277 | |
| 5 | J – 1 | 0.97 | 292 | |
| 6 | H – 6 | 0.88 | 293 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.