Daily Sunspot Evaluation
Observation Sheet Saturday, 1 March 1958
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)
- 75
- Relative number (R)
- 145
- Observer
- AB
- Reading
- all checks consistent
- File
- 19580301.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 9 | -10 | 76E | ||||
| 2 | ? – 16 | -16 | 77EEE | ||||
| 3 | B – 5 | -23 | 0 | ||||
| 4 | A – 1 | -14 | 25W | ||||
| 5 | E – 19 | -15 | 51WEEE | ||||
| 6 | ? – 2 | -10 | 78W | ||||
| 7 | C – 23 | 31 | 7W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.