Daily Sunspot Evaluation
Observation Sheet Sunday, 31 May 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)
- 12
- Number of spots (f)
- 90
- Relative number (R)
- 210
- Observer
- MÖ
- Reading
- counts consistent, some coordinates doubtful
- File
- 19700531.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 7 | 16 | 29E | 57 | |||
| 2 | G – 6 | -8 | 18E | 68 | |||
| 3 | G – 5 | -12 | 30E | 66 ⚠ | |||
| 4 | H – 5 | -19 | 21E | 65 | |||
| 5 | J – 1 | -15 | 77W | 163 | |||
| 6 | A – 1 | -10 | 35W | 121 | |||
| 7 | E – 29 | -7 | 49W | 135 | |||
| 8 | A – 2 | -6 | 35W | 121 | |||
| 9 | ? – 3 | 22 | 67W | 153 | |||
| 10 | D – 18 | 18 | 37W | 123 | |||
| 11 | J – 1 | 10 | 09W | 95 | |||
| 12 | D – 12 | 9 | 02W | 88 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.