Daily Sunspot Evaluation
Observation Sheet Thursday, 25 June 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)
- 10
- Number of spots (f)
- 96
- Relative number (R)
- 196
- Observer
- FA
- Reading
- all checks consistent
- File
- 19700625.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 14 | 23 | 20E | 95 | |||
| 2 | D – 35 | 10 | 15E | 100 | |||
| 3 | ? – 4 | 23 | 77E | 38 | |||
| 4 | C – 7 | -6 | 68E | 47 | |||
| 5 | D – 8 | -12 | 02W | 117 | |||
| 6 | J – 8 | -15 | 47W | 162 | |||
| 7 | C – 15 | -5 | 29W | 144 | |||
| 8 | J – 3 | -11 | 70W | 185 | |||
| 9 | J – 1 | 2 | 72W | 187 | |||
| 10 | J – 1 | 18 | 47W | 162 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.