Daily Sunspot Evaluation
Observation Sheet Tuesday, 1 May 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)
- 20
- Relative number (R)
- 80
- Observer
- WG
- Reading
- all checks consistent
- File
- 19510501.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | A – 1 | 0.14 | 130 | |
| 2 | B – 5 | 0.22 | 160 | |
| 3 | J – 1 | 0.52 | 240 | |
| 4 | G – 8 | 0.72 | 244 | |
| 5 | G – 3 | 0.93 | 268 | |
| 6 | A – 2 | 0.51 | 292 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.