Daily Sunspot Evaluation
Observation Sheet Friday, 16 August 1974
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)
- 23
- Relative number (R)
- 83
- Observer
- DK
- Reading
- all checks consistent
- File
- 19740816.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 2 | -13 | 45E | 257 | |||
| 2 | A – 1 | -17 | 40W | 342 | |||
| 3 | J – 5 | -4 | 41W | 343 | |||
| 4 | A – 1 | -7 | 68W | 10 | |||
| 5 | J – 1 | -8 | 80W | 22 | |||
| 6 | C – 13 | 9 | 23W | 325 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.