Daily Sunspot Evaluation
Observation Sheet Sunday, 28 October 1973
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)
- 5
- Number of spots (f)
- 41
- Relative number (R)
- 91
- Observer
- HM
- Reading
- all checks consistent
- File
- 19731028.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 4 | 23 | 03E | 191 | 200 | ||
| 2 | J – 4 | 16 | 40E | 154 | 201 | ||
| 3 | J – 1 | 12 | 26E | 168 | 202 | ||
| 4 | J – 1 | 3 | 80E | 114 | 205 | ||
| 5 | E – 31 | -13 | 07W | 201 | 201 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.