Daily Sunspot Evaluation
Observation Sheet Thursday, 24 June 1971
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)
- 48
- Relative number (R)
- 108
- Observer
- HA
- Reading
- all checks consistent
- File
- 19710624.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 8 | 10 | 07E | 343 | |||
| 2 | C – 6 | 15 | 57E | 293 | |||
| 3 | B – 10 | -16 | 22E | 328 | |||
| 4 | D – 18 | -22 | 02E | 348 | |||
| 5 | A – 1 | -19 | 00 | 350 | |||
| 6 | A – 5 | -17 | 04W | 354 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.