Daily Sunspot Evaluation
Observation Sheet Tuesday, 29 December 1970
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)
- 6
- Number of spots (f)
- 30
- Relative number (R)
- 90
- Observer
- FA
- Reading
- all checks consistent
- File
- 19701229.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 10 | 10 | 02E | 163 | |||
| 2 | H – 1 | 14 | 11E | 154 | |||
| 3 | J – 1 | 21 | 37E | 128 | |||
| 4 | J – 2 | 22 | 67E | 98 | |||
| 5 | D – 15 | -14 | 16W | 181 | |||
| 6 | A – 1 | 12 | 20W | 185 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.