Daily Sunspot Evaluation
Observation Sheet Sunday, 4 May 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)
- 5
- Number of spots (f)
- 39
- Relative number (R)
- 89
- Observer
- AT
- Reading
- counts consistent, some coordinates doubtful
- File
- 19690504.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 8 | 18E | 199 | |||
| 2 | ? – 1 | -11 | 78E | 139 | |||
| 3 | E – 28 | -13 | 45E | 172 | |||
| 4 | H – 7 | 9 | 62W | 279 | |||
| 5 | A – 2 | 20 | 41W | 231 ⚠ |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.