Daily Sunspot Evaluation
Observation Sheet Thursday, 8 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)
- 3
- Number of spots (f)
- 15
- Relative number (R)
- 45
- Observer
- HM
- Reading
- all checks consistent
- File
- 19740808.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | G – 7 | -7 | 45E | 4 | |||
| 2 | H – 4 | -10 | 31E | 18 | |||
| 3 | A – 4 | -19 | 61E | 348 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.