Daily Sunspot Evaluation
Observation Sheet Saturday, 2 January 1971
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)
- 36
- Relative number (R)
- 96
- Observer
- MA
- Reading
- all checks consistent
- File
- 19710102.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 6 | 21 | 08E | 104 | |||
| 2 | J – 4 | 22 | 14E | 98 | |||
| 3 | G – 6 | 4 | 25E | 87 | |||
| 4 | G – 6 | -14 | 72W | 184 | |||
| 5 | H – 3 | 10 | 54W | 166 | |||
| 6 | D – 11 | 13 | 43W | 155 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.