Daily Sunspot Evaluation
Observation Sheet Thursday, 20 November 1969
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)
- 55
- Relative number (R)
- 105
- Observer
- TY
- Reading
- all checks consistent
- File
- 19691120.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | F – 44 | 10 | 17E | 80 | |||
| 2 | A – 1 | 11 | 32E | 65 | |||
| 3 | G – 7 | 12 | 53E | 44 | |||
| 4 | J – 1 | -13 | 62E | 35 | |||
| 5 | A – 2 | 18 | 57W | 154 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.