Daily Sunspot Evaluation
Observation Sheet Monday, 1 December 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)
- 11
- Number of spots (f)
- 37
- Relative number (R)
- 147
- Observer
- AT
- Reading
- all checks consistent
- File
- 19691201.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 16 | 75E | 237 | |||
| 2 | B – 2 | -20 | 46E | 266 | |||
| 3 | A – 1 | -19 | 35E | 277 | |||
| 4 | B – 2 | -19 | 20E | 292 | |||
| 5 | H – 2 | -16 | 09E | 303 | |||
| 6 | H – 5 | -14 | 07W | 319 | |||
| 7 | A – 1 | -13 | 34W | 346 | |||
| 8 | J – 1 | -2 | 31W | 343 | |||
| 9 | A – 6 | 13 | 06W | 318 | |||
| 10 | A – 7 | 20 | 10W | 322 | |||
| 11 | B – 9 | 23 | 03W | 315 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.