Daily Sunspot Evaluation
Observation Sheet Saturday, 23 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)
- 7
- Number of spots (f)
- 74
- Relative number (R)
- 144
- Observer
- EH
- Reading
- all checks consistent
- File
- 19700523.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 22 | 15 | 26E | 165 | |||
| 2 | J – 1 | 17 | 44E | 147 | |||
| 3 | J – 3 | -7 | 64E | 127 | |||
| 4 | C – 9 | -10 | 19W | 210 | |||
| 5 | D – 14 | -11 | 51W | 242 | |||
| 6 | F – 12 | 17 | 68W | 259 | |||
| 7 | H – 13 | 14 | 09W | 200 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.