Daily Sunspot Evaluation
Observation Sheet Monday, 17 August 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)
- 10
- Number of spots (f)
- 121
- Relative number (R)
- 221
- Observer
- KA
- Reading
- all checks consistent
- File
- 19590817.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 1 | 19 | 56E | ||||
| 2 | E – 31 | 9 | 36E | ||||
| 3 | J – 1 | 9 | 57E | ||||
| 4 | J – 1 | 10 | 66E | ||||
| 5 | R – 3 | -7 | 46E | ||||
| 6 | R – 1 | -7 | 33E | ||||
| 7 | C – 9 | -6 | 44W | ||||
| 8 | H – 5 | 16 | 69W | ||||
| 9 | E – 59 | 14 | 17W | ||||
| 10 | B – 10 | 15 | 2W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.