Daily Sunspot Evaluation
Observation Sheet Sunday, 15 October 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)
- 7
- Number of spots (f)
- 40
- Relative number (R)
- 110
- Observer
- LT
- Reading
- all checks consistent
- File
- 19671015.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 2 | 140 | 37E | 103 | |||
| 2 | B – 5 | -16 | 35E | 105 | |||
| 3 | A – 3 | -24 | 40E | 100 | |||
| 4 | B – 5 | -22 | 17E | 123 | |||
| 5 | J – 2 | -24 | 18E | 122 | |||
| 6 | ? – 2 | 18 | 78W | 218 | |||
| 7 | H – 21 | 17 | 57W | 197 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.