Daily Sunspot Evaluation
Observation Sheet Monday, 12 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)
- 29
- Relative number (R)
- 89
- Observer
- ED
- Reading
- counts consistent, some coordinates doubtful
- File
- 19740812.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 2 | 9 | 34E | 322 | |||
| 2 | A – 1 | 8 | 44E | 312 | |||
| 3 | D – 17 | -9 | 16E | 340 | |||
| 4 | B – 7 | -18 | 21E | 335 | |||
| 5 | J – 1 | -9 | 12W | 8 | |||
| 6 | J – 1 | -8 | 23W | 15 ⚠ |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.