Daily Sunspot Evaluation
Observation Sheet Thursday, 22 May 1997
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)
- 4
- Number of spots (f)
- 38
- Relative number (R)
- 78
- Observer
- SG0
- Reading
- all checks consistent
- File
- 19970522.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 8 | 27 | 72W | 69 | 75W | 13 | 28 |
| 2 | DAC – 23 | 5 | 17W | 14 | 20W | 9.5 | 27 |
| 3 | CRO – 6 | 1 | 04W | 1 | 07W | 3 | 30 |
| 4 | HS – 1 | -34 | 50E | 307 | 47E | 1 | 29 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.