Daily Sunspot Evaluation
Observation Sheet Wednesday, 13 May 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)
- 12
- Number of spots (f)
- 165
- Relative number (R)
- 285
- Observer
- SG
- Reading
- all checks consistent
- File
- 19590513.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | F – 74 | 16 | 19E | ||||
| 2 | H – 1 | 19 | 35E | ||||
| 3 | C – 22 | 9 | 24E | ||||
| 4 | J – 1 | 17 | 60E | ||||
| 5 | A – 1 | -17 | 37E | ||||
| 6 | A – 2 | -14 | 12W | ||||
| 7 | E – 13 | -18 | 29W | ||||
| 8 | B – 16 | -15 | 52W | ||||
| 9 | J – 1 | -14 | 59W | ||||
| 10 | E – 15 | 11 | 38W | ||||
| 11 | C – 5 | 12 | 10W | ||||
| 12 | C – 14 | 27 | 19W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.