Daily Sunspot Evaluation
Observation Sheet Monday, 28 October 1957
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)
- 20
- Number of spots (f)
- 196
- Relative number (R)
- 396
- Observer
- WG
- Reading
- all checks consistent
- File
- 19571028.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 9 | 12 | 6E | ||||
| 2 | C – 12 | 26 | 25E | ||||
| 3 | ? – 1 | 39 | 82E | ||||
| 4 | A – 1 | 27 | 48E | ||||
| 5 | A – 3 | 15 | 29E | ||||
| 6 | B – 5 | 14 | 48E | ||||
| 7 | ? – 1 | 14 | 82E | ||||
| 8 | D – 18 | -14 | 45E | ||||
| 9 | A – 1 | -15 | 57E | ||||
| 10 | G – 23 | -23 | 48E | ||||
| 11 | G – 20 | -12 | 10W | ||||
| 12 | D – 26 | -23 | 32W | ||||
| 13 | A – 1 | -8 | 59W | ||||
| 14 | ? – 1 | 14 | 80W | ||||
| 15 | E – 24 | 12 | 40W | ||||
| 16 | B – 3 | 23 | 65W | ||||
| 17 | C – 12 | 22 | 35W | ||||
| 18 | E – 33 | 21 | 9W | ||||
| 19 | A – 1 | 17 | 4W | ||||
| 20 | J – 1 | 13 | 5W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.