Daily Sunspot Evaluation
Observation Sheet Monday, 16 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)
- 6
- Number of spots (f)
- 25
- Relative number (R)
- 85
- Observer
- MA
- Reading
- all checks consistent
- File
- 19710816.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 1 | 14 | 15E | 354 | |||
| 2 | A – 1 | 14 | 26E | 343 | |||
| 3 | ? – 1 | 19 | 77E | 292 | |||
| 4 | H – 2 | 13 | 52E | 319 | |||
| 5 | C – 19 | -14 | 06W | 15 | |||
| 6 | A – 1 | 20 | 76W | 85 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.