Daily Sunspot Evaluation
Observation Sheet Wednesday, 19 February 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)
- 8
- Number of spots (f)
- 37
- Relative number (R)
- 117
- Observer
- —
- Reading
- all checks consistent
- File
- 19690219.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 2 | 9 | 14E | 101 | |||
| 2 | J – 3 | 29 | 40E | 75 | |||
| 3 | D – 18 | 14 | 54E | 61 | |||
| 4 | A – 1 | 15 | 75E | 40 | |||
| 5 | A – 1 | 11 | 71E | 44 | |||
| 6 | C – 6 | -14 | 09W | 124 | |||
| 7 | C – 5 | -10 | 44W | 159 | |||
| 8 | ? – 1 | 16 | 74W | 189 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.