Daily Sunspot Evaluation
Observation Sheet Tuesday, 2 June 1981
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)
- 4
- Number of spots (f)
- 21
- Relative number (R)
- 61
- Observer
- SM
- Reading
- all checks consistent
- File
- 19810602.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 2 | 4 | 85W | 29 | 86W | ? | |
| 2 | AXX – 1 | 7 | 18W | 324 | 24W | - | |
| 3 | DAI – 15 | 15 | 08W | 314 | 11W | 7 | |
| 4 | HKX – 3 | -5 | 36W | 342 | 39W | 4.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.