Daily Sunspot Evaluation
Observation Sheet Tuesday, 20 June 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)
- 9
- Number of spots (f)
- 33
- Relative number (R)
- 123
- Observer
- SM
- Reading
- counts consistent, some coordinates doubtful
- File
- 19670620.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 2 | 20 | 10E | 237 | |||
| 2 | J – 1 | 25 | 16E | 231 | |||
| 3 | B – 10 | 25 | 31E | 216 | |||
| 4 | A – 1 | 26 | 40E | 207 | |||
| 5 | ? – 6 | 17 | 80E | 167 | |||
| 6 | J – 1 | 11 | 48E | 109 ⚠ | |||
| 7 | A – 2 | -20 | 30E | 217 | |||
| 8 | A – 1 | -23 | 30E | 217 | |||
| 9 | C – 9 | 17 | 03W | 250 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.