Daily Sunspot Evaluation
Observation Sheet Thursday, 4 June 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)
- 6
- Number of spots (f)
- 19
- Relative number (R)
- 79
- Observer
- MA
- Reading
- all checks consistent
- File
- 19700604.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | -16 | 23W | 56 | |||
| 2 | H – 4 | -15 | 30W | 63 | |||
| 3 | J – 2 | -12 | 25W | 58 | |||
| 4 | J – 2 | -8 | 37W | 70 | |||
| 5 | G – 6 | 9 | 55W | 88 | |||
| 6 | J – 4 | 11 | 52W | 85 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.