Daily Sunspot Evaluation
Observation Sheet Tuesday, 29 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)
- 8
- Number of spots (f)
- 59
- Relative number (R)
- 139
- Observer
- FA
- Reading
- all checks consistent
- File
- 19710629.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 1 | 16 | 54E | 230 | |||
| 2 | E – 7 | -7 | 45E | 239 | |||
| 3 | G – 5 | -11 | 59E | 225 | |||
| 4 | E – 12 | -15 | 57E | 227 | |||
| 5 | A – 1 | -15 | 49W | 333 | |||
| 6 | C – 5 | 10 | 56W | 340 | |||
| 7 | C – 5 | 14 | 19W | 303 | |||
| 8 | E – 23 | 15 | 10W | 294 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.