Daily Sunspot Evaluation
Observation Sheet Sunday, 30 April 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)
- 57
- Relative number (R)
- 127
- Observer
- LT
- Reading
- all checks consistent
- File
- 19670430.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 13 | 13 | 17E | 181 | |||
| 2 | D – 18 | -20 | 44E | 154 | |||
| 3 | B – 9 | -18 | 6W | 204 | |||
| 4 | H – 3 | -17 | 14W | 212 | |||
| 5 | A – 1 | 26 | 38W | 236 | |||
| 6 | A – 2 | 34 | 48W | 246 | |||
| 7 | B – 11 | 28 | 30W | 228 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.