Daily Sunspot Evaluation
Observation Sheet Thursday, 19 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)
- 8
- Number of spots (f)
- 61
- Relative number (R)
- 141
- Observer
- FY
- Reading
- all checks consistent
- File
- 19580619.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 6 | 12 | 2E | ||||
| 2 | D – 8 | 20 | 46E | ||||
| 3 | C – 7 | 14 | 71E | ||||
| 4 | J – 1 | 11 | 71E | ||||
| 5 | J – 1 | 7 | 35E | ||||
| 6 | A – 2 | -15 | 57E | ||||
| 7 | D – 8 | -26 | 4W | ||||
| 8 | E – 28 | 15 | 19W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.