Daily Sunspot Evaluation
Observation Sheet Monday, 11 September 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)
- 6
- Number of spots (f)
- 47
- Relative number (R)
- 107
- Observer
- SM
- Reading
- all checks consistent
- File
- 19670911.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 10 | 12 | 40E | 189 | |||
| 2 | C – 12 | -21 | 0 | 229 | |||
| 3 | J – 1 | -23 | 33W | 262 | |||
| 4 | B – 2 | 14 | 30W | 259 | |||
| 5 | E – 21 | 23 | 45W | 273 | |||
| 6 | J – 1 | 28 | 40W | 269 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.