Daily Sunspot Evaluation
Observation Sheet Thursday, 5 August 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)
- 9
- Number of spots (f)
- 27
- Relative number (R)
- 117
- Observer
- HA
- Reading
- counts consistent, some coordinates doubtful
- File
- 19710805.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 3 | -9 | 58E | 36 ⚠ | |||
| 2 | A – 6 | -13 | 67E | 87 | |||
| 3 | A – 2 | -6 | 19E | 135 | |||
| 4 | A – 3 | -10 | 13E | 141 | |||
| 5 | A – 1 | -28 | 02W | 156 | |||
| 6 | J – 1 | -25 | 04W | 158 | |||
| 7 | A – 2 | -5 | 04W | 158 | |||
| 8 | J – 2 | -13 | 73W | 227 | |||
| 9 | C – 7 | 5 | 39W | 193 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.