Daily Sunspot Evaluation
Observation Sheet Thursday, 31 August 1967
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)
- 13
- Number of spots (f)
- 73
- Relative number (R)
- 203
- Observer
- AE
- Reading
- all checks consistent
- File
- 19670831.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 23 | 26 | 50E | 323 | |||
| 2 | ? – 5 | 14 | 82E | 291 | |||
| 3 | B – 7 | -20 | 48E | 325 | |||
| 4 | J – 1 | -29 | 37E | 336 | |||
| 5 | B – 3 | -28 | 22E | 351 | |||
| 6 | A – 2 | -23 | 2W | 15 | |||
| 7 | B – 11 | -21 | 21W | 34 | |||
| 8 | A – 3 | -17 | 27W | 40 | |||
| 9 | C – 3 | -21 | 66W | 79 | |||
| 10 | A – 1 | 13 | 63W | 76 | |||
| 11 | A – 1 | 14 | 75W | 88 | |||
| 12 | ? – 10 | 23 | 73W | 86 | |||
| 13 | A – 3 | 25 | 22W | 35 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.