Daily Sunspot Evaluation
Observation Sheet Tuesday, 1 June 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)
- 5
- Number of spots (f)
- 28
- Relative number (R)
- 78
- Observer
- FA
- Reading
- all checks consistent
- File
- 19710601.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 4 | 14 | 21E | 273 | |||
| 2 | A – 1 | 10 | 27E | 267 | |||
| 3 | H – 3 | 1 | 75E | 219 | |||
| 4 | E – 13 | 10 | 42W | 336 | |||
| 5 | C – 7 | 9 | 37W | 328 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.