Daily Sunspot Evaluation
Observation Sheet Tuesday, 17 June 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)
- 5
- Number of spots (f)
- 45
- Relative number (R)
- 95
- Observer
- AK
- Reading
- all checks consistent
- File
- 19580617.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 36 | 15 | 7E | ||||
| 2 | C – 5 | 20 | 21E | ||||
| 3 | J – 1 | 6 | 61E | ||||
| 4 | G – 2 | -27 | 20E | ||||
| 5 | A – 1 | -10 | 31W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.