Daily Sunspot Evaluation
Observation Sheet Friday, 16 May 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)
- 9
- Number of spots (f)
- 90
- Relative number (R)
- 180
- Observer
- ET
- Reading
- all checks consistent
- File
- 19580516.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 5 | 39 | 58E | ||||
| 2 | G – 5 | -7 | 42E | ||||
| 3 | A – 4 | -26 | 50E | ||||
| 4 | J – 1 | -24 | 29E | ||||
| 5 | A – 3 | -31 | 3W | ||||
| 6 | E – 63 | -21 | 10W | ||||
| 7 | A – 6 | -15 | 9W | ||||
| 8 | A – 2 | -7 | 37W | ||||
| 9 | ? – 1 | 14 | 83W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.