Daily Sunspot Evaluation
Observation Sheet Saturday, 3 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)
- 76
- Relative number (R)
- 146
- Observer
- MA
- Reading
- all checks consistent
- File
- 19710703.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 1 | 16 | 02E | 229 | |||
| 2 | A – 1 | 9 | 29E | 202 | |||
| 3 | A – 4 | -9 | 22E | 209 | |||
| 4 | F – 50 | -13 | 03E | 228 | |||
| 5 | G – 7 | -8 | 10W | 241 | |||
| 6 | D – 11 | 6 | 19W | 250 | |||
| 7 | H – 2 | 15 | 66W | 297 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.