Daily Sunspot Evaluation
Observation Sheet Saturday, 30 May 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)
- 6
- Number of spots (f)
- 40
- Relative number (R)
- 100
- Observer
- OG
- Reading
- counts consistent, some coordinates doubtful
- File
- 19810530.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAO – 5 | 19 | 66W | 51 | 69W | 12 | |
| 2 | DAC – 14 | 4 | 41W | 26 | 44W | 12 | |
| 3 | AXX – 4 | 5 | 27E | 318 | 24E | 3 | |
| 4 | CAE – 8 | 12 | 35E | 30 ⚠ | 32E | 5 | |
| 5 | CAO – 4 | -12 | 61W | 46 | 64W | 4.5 | |
| 6 | HKI – 5 | -6 | 02E | 342 | 00 | 6 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.