Daily Sunspot Evaluation
Observation Sheet Wednesday, 12 August 1953
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)
- 28
- Relative number (R)
- 88
- Observer
- WG
- Reading
- all checks consistent
- File
- 19530812.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | G – 8 | 0.89 | 96 | |
| 2 | J – 1 | 0.56 | 98 | |
| 3 | ? – 2 | 0.94 | 112 | |
| 4 | J – 1 | 0.88 | 115 | |
| 5 | D – 9 | 0.85 | 300 | |
| 6 | C – 7 | 0.75 | 301 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.