Daily Sunspot Evaluation
Observation Sheet Saturday, 9 May 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)
- 25
- Relative number (R)
- 85
- Observer
- EH
- Reading
- all checks consistent
- File
- 19700509.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 8 | 17 | 05E | 11 | |||
| 2 | J – 2 | 14 | 13E | 3 | |||
| 3 | ? – 3 | 21 | 80E | 296 | |||
| 4 | J – 1 | -21 | 54W | 70 | |||
| 5 | H – 5 | -13 | 44W | 60 | |||
| 6 | H – 6 | 13 | 40W | 56 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.