Daily Sunspot Evaluation
Observation Sheet Friday, 24 July 1970
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)
- 7
- Number of spots (f)
- 85
- Relative number (R)
- 155
- Observer
- MA
- Reading
- all checks consistent
- File
- 19700724.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | F – 51 | 9 | 0 | 91 | |||
| 2 | H – 7 | 23 | 48E | 43 | |||
| 3 | A – 1 | 23 | 60E | 31 | |||
| 4 | C – 9 | 18 | 45E | 46 | |||
| 5 | A – 1 | -2 | 68E | 23 | |||
| 6 | G – 8 | -13 | 46E | 45 | |||
| 7 | C – 8 | -22 | 50E | 41 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.