Daily Sunspot Evaluation
Observation Sheet Monday, 24 July 1972
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)
- 4
- Number of spots (f)
- 8
- Relative number (R)
- 48
- Observer
- FA
- Reading
- all checks consistent
- File
- 19720724.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 1 | 4 | 43°E | 119 | |||
| 2 | A – 1 | -4 | 57°E | 105 | |||
| 3 | ? – 5 | -16 | 75°E | 87 | |||
| 4 | ? – 1 | -7 | 80°W | 242 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.