Daily Sunspot Evaluation
Observation Sheet Saturday, 15 March 1969
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)
- 9
- Number of spots (f)
- 36
- Relative number (R)
- 126
- Observer
- MÖ
- Reading
- all checks consistent
- File
- 19690315.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 21 | 10E | 150 | |||
| 2 | A – 4 | 12 | 31E | 129 | |||
| 3 | H – 4 | 16 | 59E | 101 | |||
| 4 | ? – 4 | 11 | 74E | 86 | |||
| 5 | B – 14 | -18 | 29E | 131 | |||
| 6 | A – 2 | -9 | 14W | 174 | |||
| 7 | J – 2 | 8 | 40W | 200 | |||
| 8 | A – 1 | 18 | 51W | 211 | |||
| 9 | J – 4 | 31 | 18W | 178 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.