Daily Sunspot Evaluation
Observation Sheet Friday, 7 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)
- 8
- Number of spots (f)
- 68
- Relative number (R)
- 148
- Observer
- ET
- Reading
- all checks consistent
- File
- 19580307.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | I – 1 | 16 | 9E | ||||
| 2 | B – 3 | 23 | 21E | ||||
| 3 | ? – 2 | 11 | 69E | ||||
| 4 | F – 35 | -17 | 1E | ||||
| 5 | A – 1 | -11 | 8W | ||||
| 6 | ? – 3 | -12 | 76W | ||||
| 7 | C – 11 | 24 | 17W | ||||
| 8 | D – 12 | 32 | 2W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.