Daily Sunspot Evaluation
Observation Sheet Monday, 26 July 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)
- 7
- Number of spots (f)
- 39
- Relative number (R)
- 109
- Observer
- DK
- Reading
- all checks consistent
- File
- 19710726.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 1 | -7 | 43E | 243 | |||
| 2 | H – 3 | -14 | 55E | 231 | |||
| 3 | B – 2 | -12 | 12E | 274 | |||
| 4 | G – 4 | 13 | 69W | 355 | |||
| 5 | D – 26 | 11 | 24W | 310 | |||
| 6 | A – 1 | 15 | 18W | 304 | |||
| 7 | J – 2 | 20 | 15W | 301 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.