Daily Sunspot Evaluation
Observation Sheet Monday, 25 May 1981
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)
- 63
- Relative number (R)
- 123
- Observer
- TÖ
- Reading
- all checks consistent
- File
- 19810525.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAC – 18 | 18 | 03E | 49 | 00 | 9.5 | |
| 2 | DAI – 35 | 3 | 31E | 21 | 28E | 9.5 | |
| 3 | CRO – 4 | 14 | 40E | 12 | 37E | 4.5 | |
| 4 | HIX – 4 | -21 | 63W | 115 | 66W | 6 | |
| 5 | AAX – 1 | -11 | 08E | 44 | 05E | ||
| 6 | HAX – 1 | -6 | 69E | 343 | 66E | 2.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.