Daily Sunspot Evaluation
Observation Sheet Saturday, 13 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)
- 7
- Number of spots (f)
- 49
- Relative number (R)
- 119
- Observer
- EH
- Reading
- all checks consistent
- File
- 19700613.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 16 | 17 | 09E | 264 | |||
| 2 | A – 2 | 20 | 19E | 254 | |||
| 3 | E – 8 | 16 | 33E | 240 | |||
| 4 | E – 13 | 17 | 50E | 223 | |||
| 5 | J – 1 | -16 | 33W | 306 | |||
| 6 | D – 8 | 14 | 40W | 313 | |||
| 7 | J – 1 | 17 | 16W | 289 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.