Daily Sunspot Evaluation
Observation Sheet Monday, 3 May 1971
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)
- 21
- Relative number (R)
- 81
- Observer
- FA
- Reading
- all checks consistent
- File
- 19710503.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 10 | 15 | 50E | 268 | |||
| 2 | H – 1 | 12 | 66E | 252 | |||
| 3 | A – 2 | -11 | 76E | 242 | |||
| 4 | G – 6 | -5 | 29W | 345 | |||
| 5 | A – 1 | 6 | 79W | 35 | |||
| 6 | A – 1 | 18 | 04W | 322 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.