Daily Sunspot Evaluation
Observation Sheet Thursday, 17 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)
- 12
- Number of spots (f)
- 82
- Relative number (R)
- 202
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19790517.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | G – 13 | 25 | 23E | 59 | 24E | 265 | |
| 2 | J – 1 | -14 | 48E | 34 | 49E | 270 | |
| 3 | G – 6 | -30 | 22W | 104 | 21W | 272 | |
| 4 | J – 2 | -16 | 36W | 118 | 35W | 257 | |
| 5 | J – 4 | -23 | 73W | 155 | 72W | 256 | |
| 6 | J – 1 | 3 | 67W | 149 | 66W | 255 | |
| 7 | E – 23 | 14 | 55W | 137 | 54W | 268 | |
| 8 | A – 1 | 21 | 49W | 131 | 48W | 273 | |
| 9 | D – 21 | 15 | 26W | 108 | 25W | 267 | |
| 10 | J – 1 | 28 | 44W | 126 | 43W | 258 | |
| 11 | A – 1 | 36 | 24W | 106 | 23W | 271 | |
| 12 | B – 8 | 14 | 01W | 83 | 00 | 264 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.