Daily Sunspot Evaluation
Observation Sheet Tuesday, 30 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)
- 30
- Relative number (R)
- 90
- Observer
- FA
- Reading
- all checks consistent
- File
- 19710330.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 3 | 12 | 03E | 43 | |||
| 2 | J – 2 | 25 | 08E | 38 | |||
| 3 | D – 5 | 13 | 42E | 4 | |||
| 4 | B – 4 | -15 | 18E | 28 | |||
| 5 | H – 14 | -19 | 13E | 33 | |||
| 6 | J – 2 | -15 | 22W | 68 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.