Daily Sunspot Evaluation
Observation Sheet Friday, 5 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)
- 29
- Relative number (R)
- 89
- Observer
- HA
- Reading
- all checks consistent
- File
- 19710305.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 4 | -11 | 33E | 343 | |||
| 2 | C – 9 | -15 | 44W | 60 | |||
| 3 | J – 3 | 7 | 61W | 77 | |||
| 4 | H – 7 | 9 | 19W | 35 | |||
| 5 | J – 1 | 25 | 31W | 47 | |||
| 6 | G – 5 | -2 | 03W | 19 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.