Daily Sunspot Evaluation
Observation Sheet Monday, 3 August 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)
- 9
- Number of spots (f)
- 66
- Relative number (R)
- 156
- Observer
- AÖ0
- Reading
- counts consistent, some coordinates doubtful
- File
- 19810803.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 1 | 10 | 44W | 283 ⚠ | 81W | 45 | |
| 2 | DAC – 15 | 23 | 40W | 246 | 44W | 9.5 | |
| 3 | DAO – 12 | 19 | 12W | 218 | 16W | 19 | |
| 4 | DAI – 22 | 15 | 10W | 216 | 14W | 10 | |
| 5 | HKX – 2 | 11 | 80E | 126 | 46E | ||
| 6 | HAX – 1 | -19 | 79W | 285 | 83W | ||
| 7 | ? – 2 | -12 | 75W | 281 | 79W | ||
| 8 | HAX – 1 | -3 | 69W | 275 | 74W | 2 | |
| 9 | CAO – 10 | -8 | 33W | 239 | 37W | 5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.