Daily Sunspot Evaluation
Observation Sheet Wednesday, 31 May 1967
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)
- 15
- Number of spots (f)
- 101
- Relative number (R)
- 251
- Observer
- SK
- Reading
- all checks consistent
- File
- 19670531.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 1 | 19 | 22E | 128 | |||
| 2 | C – 17 | 27 | 47E | 103 | |||
| 3 | D – 16 | 23 | 40E | 110 | |||
| 4 | A – 2 | 13 | 24E | 126 | |||
| 5 | H – 9 | 23 | 51E | 99 | |||
| 6 | H – 9 | -19 | 11E | 139 | |||
| 7 | H – 3 | -21 | 55W | 205 | |||
| 8 | H – 1 | -17 | 66W | 216 | |||
| 9 | E – 7 | 10 | 49W | 199 | |||
| 10 | A – 1 | 17 | 34W | 184 | |||
| 11 | B – 7 | 13 | 42W | 192 | |||
| 12 | ? – 11 | 27 | 71W | 221 | |||
| 13 | E – 11 | 19 | 17W | 167 | |||
| 14 | A – 2 | 23 | 15W | 165 | |||
| 15 | A – 4 | 27 | 7W | 157 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.