Daily Sunspot Evaluation
Observation Sheet Friday, 20 March 1959
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)
- 167
- Relative number (R)
- 257
- Observer
- AK
- Reading
- all checks consistent
- File
- 19590320.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | F – 44 | 15 | 8E | ||||
| 2 | A – 2 | 20 | 43E | ||||
| 3 | ? – 2 | 26 | 74E | ||||
| 4 | E – 10 | 18 | 56E | ||||
| 5 | ? – 1 | 33 | 76E | ||||
| 6 | B – 5 | -9 | 37W | ||||
| 7 | ? – 1 | 9 | 71W | ||||
| 8 | F – 41 | 11 | 31W | ||||
| 9 | F – 61 | 29 | 24W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.