Daily Sunspot Evaluation
Observation Sheet Thursday, 16 August 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)
- 7
- Number of spots (f)
- 71
- Relative number (R)
- 141
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19790816.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 2 | 18 | 23E | 299 | 20E | 145 | |
| 2 | J – 1 | 18 | 68E | 254 | 65E | 150 | |
| 3 | A – 1 | -13 | 61E | 261 | 58E | 151 | |
| 4 | E – 29 | -25 | 50E | 272 | 47E | 148 | |
| 5 | D – 13 | -23 | 32E | 290 | 29E | 146 | |
| 6 | A – 1 | -17 | 65W | 27 | 66W | 132 | |
| 7 | D – 24 | 19 | 30W | 352 | 33W | 116 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.