Daily Sunspot Evaluation
Observation Sheet Friday, 20 March 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)
- 7
- Number of spots (f)
- 27
- Relative number (R)
- 97
- Observer
- MÖ
- Reading
- all checks consistent
- File
- 19700320.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 10 | 19 | 59E | 257 | |||
| 2 | ? – 2 | 15 | 75E | 241 | |||
| 3 | J – 2 | 11 | 62E | 254 | |||
| 4 | J – 1 | -4 | 55E | 261 | |||
| 5 | J – 1 | -15 | 13E | 303 | |||
| 6 | J – 1 | -1 | 68W | 24 | |||
| 7 | B – 10 | 16 | 20W | 336 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.