Daily Sunspot Evaluation
Observation Sheet Sunday, 20 May 1979
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)
- 27
- Relative number (R)
- 107
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19790520.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 3 | 26 | 24E | 20 | 23E | 278 | |
| 2 | J – 1 | 18 | 72E | 332 | 71E | 279 | |
| 3 | J – 2 | -17 | 54E | 350 | 53E | 276 | |
| 4 | A – 2 | -14 | 11E | 33 | 10E | 270 | |
| 5 | J – 2 | -30 | 61W | 105 | 62W | 272 | |
| 6 | J – 4 | 14 | 60W | 104 | 61W | 267 | |
| 7 | J – 1 | 27 | 80W | 124 | 81W | 258 | |
| 8 | H – 12 | 23 | 20W | 64 | 21W | 265 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.