Daily Sunspot Evaluation
Observation Sheet Sunday, 19 July 1959
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)
- 15
- Number of spots (f)
- 68
- Relative number (R)
- 218
- Observer
- ET
- Reading
- all checks consistent
- File
- 19590719.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 9 | 26 | 1E | ||||
| 2 | H – 6 | 32 | 5E | ||||
| 3 | J – 1 | 28 | 29E | ||||
| 4 | J – 2 | 23 | 69E | ||||
| 5 | J – 1 | 19 | 73E | ||||
| 6 | H – 13 | 11 | 10E | ||||
| 7 | J – 1 | 9 | 30E | ||||
| 8 | A – 4 | 6 | 41W | ||||
| 9 | J – 1 | 10 | 24W | ||||
| 10 | A – 1 | 9 | 19W | ||||
| 11 | F – 23 | 18 | 63W | ||||
| 12 | ? – 2 | 18 | 29WE | ||||
| 13 | ? – 1 | 22 | 71W | ||||
| 14 | J – 2 | 21 | 27W | ||||
| 15 | A – 1 | 20 | 20W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.