Daily Sunspot Evaluation
Observation Sheet Monday, 19 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)
- 5
- Number of spots (f)
- 10
- Relative number (R)
- 60
- Observer
- ED
- Reading
- all checks consistent
- File
- 19740819.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 1 | 0 | 81E | 182 | |||
| 2 | J – 1 | -15 | 06E | 259 | |||
| 3 | ? – 2 | -14 | 76W | 339 | |||
| 4 | J – 1 | -3 | 81W | 344 | |||
| 5 | D – 5 | 10 | 64W | 329 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.