Daily Sunspot Evaluation
Observation Sheet Saturday, 6 March 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)
- 18
- Relative number (R)
- 78
- Observer
- MA
- Reading
- all checks consistent
- File
- 19710306.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 5 | -12 | 20E | 343 | |||
| 2 | J – 3 | -14 | 59W | 62 | |||
| 3 | J – 1 | 7 | 72W | 75 | |||
| 4 | J – 2 | -2 | 17W | 20 | |||
| 5 | H – 6 | 9 | 32W | 35 | |||
| 6 | J – 1 | 25 | 42W | 45 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.