Daily Sunspot Evaluation
Observation Sheet Tuesday, 23 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)
- 8
- Number of spots (f)
- 33
- Relative number (R)
- 113
- Observer
- MA
- Reading
- all checks consistent
- File
- 19700623.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 19 | 18E | 123 | |||
| 2 | A – 1 | 12 | 10E | 131 | |||
| 3 | D – 9 | 23 | 47E | 94 | |||
| 4 | C – 13 | 10 | 42E | 99 | |||
| 5 | J – 4 | -4 | 05W | 146 | |||
| 6 | J – 1 | -15 | 20W | 161 | |||
| 7 | J – 3 | -9 | 44W | 185 | |||
| 8 | J – 1 | 19 | 21W | 162 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.